"Arithmetic Mean" Essays and Research Papers

Arithmetic Mean

difference between a population and a sample. In which of these is it important to distinguish between the two in order to use the correct formula? mean; median; mode; range; quartiles; variance; standard deviation. 2. The following numbers represent the weights in pounds of six 7year old children in Mrs. Jones' 2nd grade class. {25, 60, 51, 47, 49, 45} Find the mean; median; mode; range; quartiles; variance; standard deviation. 3. If the variance is 846, what is the standard deviation? 4. If we have the...

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Arithmetic Mean and Reliability

for successfully completing the task in the allotted time. Assuming that the teams work independently, what is the probability that the task will not be completed in time? 12. An electronic chess game has a useful life that is exponential with a mean of 30 months. Determine each of the following: o. The probability that any given unit will operate for at least (1) 39 months, (2) 48 months, (3) 60 months. p. The probability that any given unit will fail sooner than (1) 33 months, (2)...

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Arithmetic Mean and Solved Assignments Visit

Classification and Tabulation 2 Differences between Classification and Tabulation 2 Structure and Components of a Table with an example 6 10 (a) Explain Arithmetic mean. (b) The mean wage is Rs. 75 per day, SD wage is Rs. 5 per day for a group of 1000 workers and the same is Rs. 60 and Rs. 4.5 for the other group of 1500 workers. Find the mean and standard deviation for the entire group. (a) Explanation (b) Solution 3 3 7 10 Mr. Arun and Mr. Bhandari play a game. If Mr. Arun picks up an even...

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Arithmetic Mean and Quantitative Discrete

Parameter The mean of population Statistic The mean of the sample Variable The age of one child who takes the first ski or snowboard lesson Data The values of the variable, such as age 7 etc.. EXERCISE 6 A cardiologist is interested in the average recovery period for her patients who have had heart attacks. Define the following in terms of the study. Give examples where appropriate. Population Patients who have had heart attacks. Sample A group of the patients Parameter The mean of the population ...

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Arithmetic Mean and Five-step P-value Approach

company wants the packages to contain a mean of 8.17 ounces so that virtually none of the packages contain less than 8 ounces. A sample of 50 packages is selected periodically, and the packaging process is stopped if there is evidence that the mean amount packaged is different from 8.17 ounces. Suppose that in a particular of 50 packages, the mean amount dispensed is 8.159 ounces, with a sample standard deviation of 0.051 A. Is there evidence that the population mean amount is different from 8.17 ounces...

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Arithmetic Mean and Exchange Rate Effect

Chapter 3, Problem 4 Investment Category Arithmetic Geometric Standard Deviation Mean Mean Of Return Common Stocks 10.28% 8.81% 16.90% Treasury Bills 3.54% 3.49% 3.20% Long-term govern. Bonds 5.10% 4.91% 6.40% Long-term corpor. Bonds 5.95% 5.65% 9.60% Real Estate 9.49% 9.44% 4.50% a). Explain why the geometric and arithmetic means are not equal and whether one or the other may be more useful...

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Arithmetic Mean and Life Satisfaction

PART A: i) Male: Female: The mean value of life satisfaction for male is about 7.7459 while for female is 7.7101, which proves there is no significant different life satisfaction between male and female, thus gender does not affect life satisfaction a lot. But when it comes to sample variance, for male is 2.5684 while for female is 3.0081. From this pair of figures it is obvious that the life satisfaction for female is more flexible than male. Man’s life satisfactions are easy to be affected...

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Arithmetic Mean and Gulf View

to Sell | Mean | 474.0075 | Mean | 454.2225 | Mean | 106 | Median | 437 | Median | 417.5 | Median | 96 | Maximum | 975 | Maximum | 975 | Maximum | 282 | Minimum | 169.9 | Minimum | 165 | Minimum | 28 | Standard Deviation | 197.29003 | Standard Deviation | 192.5177534 | Standard Deviation | 58.2168207 | Based on the chart, the mean was calculated by adding up the sum of the list and divide 40, which the number of the total listed prices. The mean is 474,007.5, which mean the average...

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Arithmetic Mean and Central Tendency

central tendency. Under what condition(s) should each one be used? Mean- Works good when it comes to test scores Median- should be used when describing something like average income. Mode= is good is you want to see what is you best seeing product in a store situation. 2. Last year, 12 employees from a computer company retired. Their ages at retirement are listed below.First, create a stem plot for the data. Next, find the mean retirement age. Round to the nearest year.        55   77   64   77   69   63   62   64   85   64   56   59...

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Arithmetic Mean and Rationale

d. Nominal 2. What was the mean posttest empowerment score for the control group? The mean posttest empowerment score for the control group was 97.12 3. Compare the mean baseline and posttest depression scores of the experimental group. Was this an expected finding? Provide a rationale for your answer. When comparing the mean baseline and post test depression scores of the experimental group, shows a 6 point difference in the mean values. It can be surmised that the study...

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Aristotle and the Doctrine of the Mean

Aristotle’s Doctrine of the Mean and the Problem of Self-Control Introduction Aristotle’s Nicomahean Ethics is a rich text of ancient wisdom, much of which has become ingrained into today’s rhetoric in many schools of thought in the western world. It is with Aristotle’s views on Virtue that this paper is primarily concerned, more specifically with his idea that to have virtue is to display attitudes and actions to a moderate and intermediate degree. Stan Van Hooft (2008) notes that, although...

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Arithmetic Mean and Correct Answer

Reject H0  Question 5 0 out of 1 points Questions 5 through 8 refer to the following: In 1985, the mean weight of players in the National Football League was 225 pounds.  A random sample of 50 players taken during the 2012 season showed a mean weight of 249.7 pounds with a sample standard deviation of 35.2 pounds.  The researcher is interested in finding evidence at the .05 level that the mean weight of NFL players has increased since 1985.  Which of the following pairs of hypotheses is suggested...

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Statistics and Compute Mean Sum

in statistics. Solution: (a) Use the steps of hypothesis testing. Size of sample, n = 8 Degree of freedom = n-1 = 8-1 = 7 Sum of sample = i=1∑n=8xi = (25+27+25+23+24+25+26+25) = 200 | Time (in Hours) | Sum | Mean(xm) | (xi- xm)2 | Standard Deviation | 1 | 25 | 200 | Mean = Sum/n= 200/8= 25 | 0 | σ = √( i=1∑n=8(xi-xm)2/(n-1))= √(10/7)= √1.4285= 1.195 | 2 | 27 | | | 4 | | 3 | 25 | | | 0 | | 4 | 23 | | | 4 | | 5 | 24 | | | 1 | | 6 | 25 | | | 0 | | 7 | 26 | | |...

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Normal Distribution and Population Mean

Chapter 7 #42 The accounting department at Weston Materials, Inc., a national manufacturer of unattached garages, reports that it takes two construction workers a mean of 32 hours and a standard deviation of 2 hours to erect the Red Barn model. Assume the assembly times follow the normal distribution. a. Determine the z values for 29 and 34 hours. What percent of the garages take between 32 hours and 34 hours to erect? z(29) = (29-32)/2 = -3/2 z(34) = (34-32)/2 = 1 z(32) = 0 P(32 < x <...

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Project Regression to Mean Paper.docx

Memorandum Subject: Regression to the Mean with Coin Flips This paper discusses the statistics project, Regression to the Mean with Coin Flips. The paper is divided into four parts, which are summarized below: Part One: The Questionnaires This section summarizes the results of questionnaires handed out to a random sample of 110 people. Pie charts are provided, which reflect the responses to each question. Part Two: 200 Flips This section discusses the outcome of flipping a normal coin...

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Hypothesis Testing: Two-Sample Case for the Mean

Hypothesis Testing: Two-Sample Case for the Mean Many cases in the social sciences involve a hypothesis about the difference between two groups (i.e. men and women, control and experiment). We analyze statistics from two samples, and the hypothesis and confidence interval would deal with the difference between two population means. The following factors are important in hypothesis testing: 1. probability theory 2. the sampling distribution of the statistic 3. the errors inherent...

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MB0040 Statistics for Management

Explain Arithmetic mean. (b) The mean wage is Rs. 75 per day, SD wage is Rs. 5 per day for a group of 1000 workers and the same is Rs. 60 and Rs. 4.5 for the other group of 1500 workers. Find the mean and standard deviation for the entire group. Answer. (a) Arithmetic mean: Arithmetic mean is defined as the sum of all values divided by number of values and is represented by X . Arithmetic mean is also called ‘average’. It is most commonly used measures of central tendency. Arithmetic Mean of a series...

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Variances: Normal Distribution and Budget Cash Figure

Variances Variances can be either: * Positive/favourable (better than expected) or * Adverse/unfavourable ( worse than expected) A favourable variance might mean that: * Costs were lower than expected in the budget, or * Revenue/profits were higher than expected By contrast, an adverse variance might arise because: * Costs were higher than expected * Revenue/profits were lower than expected What causes budget variance? There are four key reasons and it is important that...

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2.1.4

used for both graphs, they would look as follows:      Example 2:  ABC.com presented that the average blood sugar level before meals for Americans is 142 mg/dL  but did not specify how the average was calculated. What they did not share was that the mean,  or arithmetic average, was calculated from a sample size of only four people. Of these four  people, all of the blood sugar levels (before meals) were in normal ranges and one person had a  blood sugar level of 240 mg/dL, causing the entire group’s average to be skewed...

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cost of debt

choosing the appropriate market risk premium. There are two historical equity risk premiums given for a time period from 1926 to 1999: Geometric mean and arithmetic mean. The geometric mean is a better estimate for longer life valuation while the arithmetic mean is better for a one-year estimated expected return. Therefore, we chose to use the geometric mean to coincide with the choice to use the 20-year yield on U.S. Treasuries, which is 5.9 percent. Next, we had to decide on a beta to use for Nike...

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Mb0040 – Statistics for Management

questionnair is more than schedule. 2- Data representation of family expenditure using Pie Chart 3- X = X1*n1 + X2*n2 n1 +n2 where X = Combined arithmetic mean = 10.9 X1 = arithmetic mean of sample (1) = 10.4 and n1 = No. of sample (1) = 100 X2 = arithmetic mean of sample (1) = ? and n1 = No. of sample (2) = 150 So… 10.9 = 10.4 * 100 + X2 * 150 100 + 150 2725 = 1040 + X2 * 150 1685 = X2 * 150 ...

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Security Analysis Portfolio Theory Assignment

15 2011 7.44 0.20 1579.07 2010 8.50 0.37 1314.02 2009 12.84 0.25 1075.24 2008 5.85 0.25 1186.57 2007 11.00 0.40 1354.38 2006 7.75 0.15 914.69 2005 5.70 0.15 888.32 2004 4.70 0.15 819.86 2003 4.10 0.10 691.96 a. Average Annual Return is the arithmetic mean of a series of rates of return. Average Annual Return, AAR SHARE PRICE KLCI INDEX 7.39 1246.50 b. In finance, standard deviation is applied to the annual rate of return of an investment to measure the investment's volatility. Standard deviation...

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Nike case study

is to choose the appropriate risk premium. There are two historical equity risk premiums given for a time period from 1926 to 1999: Geometric mean and arithmetic mean. The geometric mean is a better estimate for longer life valuation while the arithmetic mean is better for a one-year estimated expected return. Therefore, we chose to use the geometric mean which is 5.9%. Next, we had to decide on a beta to use for Nike Inc. for use in the CAPM approach. There are many approaches to calculate...

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TWO 0402

help of suitable examples. (10) b) Write down the formulas of arithmetic mean and median. Calculate from the following table arithmetic mean and median. (10) Class Interval Frequency (f) 0 - 50 51 - 100 101 - 150 151 - 200 201 - 250 251 - 300 301 - 350 351 - 400 401 - 450 12 15 10 11 18 20 8 5 9 Q.5 Write a short note on each of the following: (5+5+5+5) a) Simultaneous Equations b) Factors of Production c) Wage d) Harmonic Mean ASSIGNMENT No. 3 (Units 9-13) Total Marks: 100 Pass Marks:...

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Abc Acquitsion

can use the data form the following table:           Arithmetic average    Geometric Average        Stocks ‐  Stocks ‐  Stocks ‐  Stocks ‐  Historical Period  T.Bills    T.Bonds  T.Bills    T.Bonds  1928‐2004    7.92%    6.53%    6.02%    4.84%  1964‐2004    5.82%    4.34%    4.59%    3.47%  1994‐2004    8.60%    5.82%    6.85%    4.51%    For a long‐term investor the geometric average with treasury bonds (4.84%) is used.  For a short‐term investor the arithmetic average with treasury bills (7.92%) is used...

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Generate Expressions

following expressions represents the time he spent at the job? 15. If the average (arithmetic mean) of the 3 numbers above is 3y, what is x in terms of y? y 16. An apple orchard has n trees, and each tree typically produces a apples in a season. If the orchard plants m additional trees, in terms of a, n and m, what will be the expected total yield of apples? am + an 17. If the average (arithmetic mean) of w + 2 and 3w is y and the average of 3w – 4 and w is x, what is the average of x and...

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Descriptive Statistics Paper

Descriptive statistics The measures of central tendency can be measured by arithmetic mean, median and mode. The most common of the three is the arithmetic mean. Since the United States population has over one million people data collected from a large population can result in a 95% confidence level. Based on a survey done in the United States, at least three homeowner out of 1,000 are losing their homes to foreclosure. The arithmetic mean is a list of numbers which is the sum of all the members divided by...

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Course Outline Statistics

distributions • Use the normal distribution to interpret z scores and compute probabilities • Estimate a population mean or proportion using a point estimate and confidence intervals and interpret the confidence level • Determine the appropriate sample size for a specific margin of error and confidence interval • Conduct and interpret hypothesis tests for both means and proportions • Perform chi-square analysis and make relevant conclusions • Determine appropriate statistical...

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Garbage disposal practices Chapter 1

n = 140 1+0.126 n = 140 1.126 n = 124 is the sample size of the study NOTE: Only 80 Statistical treatment The results of this study will be treated by percentage method and weighted mean. Percentage method distinguishes between cross-controlling area data, which you maintain in an overhead structure and controlling-area related data, such as base cost elements, overhead and credit objects. The method is an arrangements of the values...

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Odeoyin Abel MGT

one point is outlier and it representing 8.00 on X-axis and 10.00 on Y-axis 3) The graph above shows the mean daily calories intake on X-axis and infant mortality rate (per 1000) on Y-axis The scatterplot show that there is a negative relationship between the mean daily caloric intake and infant mortality rate. In which increase in infant mortality rate tend to decreasing in daily caloric intake. And is no outlier on the scatter diagram...

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Best Practices in Estimating the Cost of Capital: Survey and Synthesis

cost of the capital. As a result, accurately measuring the cost of capital is a critical element in many business decisions. Companies often have various types of capital that include differences in risk, and required rates of return. A standard means of expressing the cost of this capital is through a weighted average of the costs used for individual sources of capital, and this is typically referred to as the weighted average cost of capital (WACC). There are three components to WACC: debt, preferred...

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Hbs Marriott Case

might distort results. b) Did you use arithmetic or geometric averages to measure rates of returns? The arithmetic mean adds the annual historical risk premiums and averages the results, while the geometric mean is equal to the compounded annual risk premium. In professional practice, both these methods of calculating average historical risk premiums are regularly employed. However, there is a major statistical difference between the two approaches. Geometric mean is a compounded average of risk premiums...

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Stats Equations

Using the Sampling Distribution for Means Compute the Sample Mean Define the sampling distribution μx̄ = Define the probability statement of interest P(z30 will give sampling distribution that is nearly normal fairly symmetric, n>15 The sampling distribution with have: Sampling Distribution of a Proportion Sampling Proportion Error = p – Sampling Distribution of P is approximated by a normal distribution if Where this applies: Mean = Standard Error = Z-Values for Proportions ...

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The end

researcher. Example: In sociology, in measuring the effect of education on income or wealth, the dependent variable is level of income/wealth and the independent variable is the education level of the individual. 3- Define: Reliability: It means whether a test or measuring tool used, measures something consistently. Also, the extent to which measurement differ from occasion to occasion as a function of measurement error. Note: error is the difference between one’s observed score and one’s...

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Mba Statistics Exam Review Sheet

variable is any change of an individual. A variable can take different values for different individuals. A categorical variable places an individual into one of several groups or categories. A quantitative variable takes numerical values for which arithmetic operations such as adding and averaging make sense. The distribution of a variable tells us what values the variable takes and how often it takes these values A time plot of a variable plots each observation against the time at which it was measured...

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Quantitative Problems Chapter 11

calculated using a value-weighted arithmetic mean? Solution: For a value-weighted arithmetic mean, the change is calculated as follows: First, the market value at time  0 is calculated as: Security Price Shares Outstanding Market Value time  0 time  1 1 8 13 20 million $160 2 22 25 50 million $1,100 3 35 30 120 million $4,200 4 50 55 75 million $3,750 $9,210 The change is then calculated as: Index1  Index0  1.0027 15. An index had an average (geometric) mean return over 20 years of 3.8861%...

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Asset Allocation: Index Funds

thanks in large part to the tech bubble. We chose to calculate average returns as 12x the monthly average return. This annualizes our return, which provides a better representation of returns by including more data points to perform analysis. The arithmetic calculation provides an impartial estimate of future return because it is always more than the geometric. All assets classes reported positive returns from 1990 through 1999, while the S&P 500 index had the highest annual average return of 17.7%...

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how do you download google play store

her act of being good. One day Tulip and I were in a class and we had to work in groups, so the face that I made to Tulip was really mean and she just smiled at me and went on walking to get some pens from a cupboard in the classroom. The next night Ruby, Tulip´s little friend appeared on my door. She immediately came in and started talkingchanged and wasn´t so mean and grumble. That’s a memory that I won’t forget!! Everything since then was great and eventhough I was around tulip I still had lots...

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The effect of food source (mung bean Vigna radiata vs. black-eyed pea Vigna unguiculata) on relative inhibition of acetylcholinerase due to malaoxon in bean beetle Callosobruchus maculatus

specific procedure and materials used is found on pp. 73-76 of (Course Supplement, 2014). Once we collected the data on the 15 individual beetles, we found the sample mean relative inhibitions per experimental group and their respective sample standard deviations. We then used a two-tailed t-test analysis to determine if the difference in means is statistically significant. Our experimental prediction: if we perform the colorimetric enzyme assay (described on pp. 73-76 of the Course Supplement) on two groups...

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classification of solids

where xi = mass fraction in a given increment, = average diameter, taken as arithmetic average of the smallest and largest particle diameters in increment. 1.5 Average particle size (1). Volume-surface mean diameter, , defined by If the number of particles in each fraction Ni is known, then (2). Arithmetic mean diameter NT = number of particles in the entire sample (3). Mass mean diameter (4). Volume mean diameter 1.6 Number of particles in mixture The volume of any particle is proportional...

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Titration Lab Report

concentration. Titration is a common laboratory method of quantitative chemical analysis that is used to determine the unknown concentration of an identified analyte.¹ Titrant means substance with known concentration existing in buret, analyte means substance with unknown concentration in erlenmayer and indicator means chemical which is used to observe acid-base reaction.² In this investigation, titrant is NaOH, analyte is HCl and indicator is phenolphtalein. Figure 1: Setup for a typical titration³ ...

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Supply & Demand

6.3, 6.4, and 6.5 (page 338) – Large Sample Hypothesis Test of a Mean Example 6.3 A manufacturer of cereal wants to test the performance of one of its filling machines. The machine is designed to discharge a mean amount of 12 ounces per box, and the manufacturer wants to detect any departure from this setting. This quality study calls for randomly sampling 100 boxes from today’s production run and determining whether the mean fill for the run is 12 ounces per box. Set up a test of hypothesis...

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Boeing Case Study

return at the time of this case was 4.56% (Bruner, p. 239, 2007). At the time of the case, four main equity market risk premiums (EMRP) were used: 6.4% = Geometric mean over T-bills 4.7% = Geometric mean over T-bonds 8.4% = Arithmetic mean over T-bills 6.4% = Arithmetic mean over T-bonds For the purpose of analysis we will use 6.4% EMRP, thus (E-Rf) = 4.6%. The case study provided seven different beta that can be used for the capital assets...

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Portfolio Analysis

size of the magnitude of the abnormal or excess returns earned by the manager, which is the ability to earn “above-average” returns whereas breadth refers to the number of different securities for which the manager can generate excess returns. This means that the ability to completely eliminate all non-systematic risk relative to the portfolio’s benchmark. The measurement of depth and breadth could be obtained through the regression analysis as well as risk adjusted performance measures, which would...

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Co2 In Yeast Solutions

scatter plot for all of the means of the sucrose solutions including the standard error. I’ve decided to process and present my data in this form because the structure of the data table and graph clearly show the carbon dioxide produced in each sucrose solution which is the main focus of this lab. I have chosen to include standard deviation because when recording data because standard deviation helps you comprehend how much a given data point is different from the average (mean), which is helpful in this...

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Boeing's Strategy

at the time of this case was 4.56% (Bruner, p. 239, 2007). At the time of the case, four main estimatesof equity market risk premiums (EMRP) were: 6.4% = Geometric mean over T-bills 4.7% = Geometric mean over T-bonds 8.4% = Arithmetic mean over T-bills 6.4% = Arithmetic mean over T-bonds For the purpose of analysis we will use 6.4% EMRP, thus (E(Rm)-Rf) = 6.4 %.() The cost of equity is determined by the company’s levered Beta (). This is calculated...

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Brine Shrimp and Ethanol Alcohol

could fit on a small pin (“Brine Shrimp,” 2013). Hence, `1using the toothpick worked just fine. Nauplii molt about fifteen times until they reach adult size (“Brine Shrimp,” 2013). A. salina are known as an environmental indicator species, which means they are used to measure toxins, drugs, and other chemicals. Brine shrimp are sensitive to temperature and salinity levels, which is why they are good test organisms (Lu et al., 2012). Brine shrimp were put into ethyl alcohol to test their viability...

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Best Ways to Analyze Data in Order to Improve Decision Making

typical difference between the values in a set of values. Two types of descriptive analysis are: 1. Univariate analysis: Univariate analysis involves describing the distribution of a single variable, including its central tendency (including the mean, median, and mode) and dispersion (including the range and quantiles of the data-set, and measures of spread such as the variance and standard deviation). 2. Bivariate analysis: Used when a sample consists of more than one variable. Bivariate analysis...

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ECON 2206 assignment 2

exist in our equation (2). Also there are no same explanatory variables that are measured in different units in our equation. Also in our equation (2) we have at least k+1 observations. Thus we can conclude that MLR 3 stands. MLR 4 (Zero Conditional Mean) – This assumption requires that the error u has an expected value of 0 given any values of the independent variables. From the given information we can deduce the following things: that there is no misspecification of the functional form, we have...

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MM207 Mid Term

accurate level of measurement, it can use whole numbers and partials. Ratios often work with mean, median and standard deviation. c) A variable measured at the ordinal level of measurement. -The Ordinal variable is demonstrated in the data set in Q10. The data can be shown in a frequency just as nominal data can. Ordinal often work with frequencies and proportions but separate from nominal, sometimes work with means. 7. What is the approximate percentage of students represented in the data set who...

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Bullying and Guys

it’s over [smiles weakly] Voiceover: And brave she was. Every time she got another note she would just smile and put it in the bin. But slowly things got worse… [Grace is on facebook and she’s got mean messages on her wall from a user called ‘Gracie Poo’] [At school] Grace: You guys didn’t see the mean messages on my wall did you? I deleted them but I didn’t know how long they were on there for… Chloe: No… what did they say Gracie? Grace: Th- [nearly bursts into tears] I don’t want to talk about...

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Order Effects in Personality Impression

impression ratings of the hypothetical person accumulated by each experimenter group were combined, and the mean average of the ratings were then determined for each group, FU, UF, and N. This data was then calculated through a one-way analysis of variance as represented in Fig.1. The FU group observed here, showed a significantly higher mean rating than the N group, also the UF group had a lower mean rating than the N group, providing evidence that a primacy effect was present. Fig.1 indicates that...

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Exercise 16

Exercise 16: Mean and Standard Deviation 1. The null hypothesis would be: There is no difference in levels of empowerment, self-care and efficacy, or depression in patients with end stage renal disease that have attended an empowerment program. 2. The average baseline depression score in the experimental group was 14.00. This value is pulled from the Mean Column 3. The baseline number for the self-care and efficacy patients was 89.56, where posttest numbers are 96.00. This should...

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Statistics: Arithmetic Mean and Relative Frequency

shapes of distribution and the skews 8. know shapes of distribution, plot the stem and leaf graph CH3 1. a) find the mean and median c) replace one number with a higher number and find the mean and median again (mean changes, median stays the same) d) which center of measure works better? The median 2. four cars cost $.... a) find the mean of the cost ( add all and divide by number of things) b) find the median --- MAKE SURE YOU PUT THEM IN ASCENDING ORDER!! c) find...

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Exercise 16 Questions to be Graded

measurement? a. Nominal b. Ordinal c. Interval/ratio d. Experimental Answer: c. Interval/ratio 2. What was the mean posttest empowerment score for the control group? Answer: 97.12 3. Compare the mean baseline and posttest depression scores of the experimental group. Was this an expected finding? Provide a rationale for your answer. Answer: The mean baseline depression score is 14.00 and the posttest is 13.36 with a difference of 0.64.There is a slight amount of depression after...

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Principles of Quantitative Methods

calculated numerically. This variability or diversity is measured through standard deviation. Standard deviation is calculated by summing up the squares of the difference of each value from the mean (Lohr, 1999). A low standard deviation shows that the values of the individual pieces of data tend to be very close to the mean, conversely a high standard deviation exhibits that the data values are dispersed out over a bigger range of values. Quartile Deviation The upper and lower quartiles of a set of numerical...

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Marriot Corp: Cost of Capital

project stays constant, net present value and hurdle rate are used as variable to decide if they should accept the project. The higher the hurdle rate, the lower the net present value because future cash flows are discounting at a higher rate. This also means lower return on the project. However, WACC and net present value of the project should be considered and calculated separately for each division for different investments projects. Therefore figure A could be misleading because it does not separate...

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sound localization

Psychology students from Australian Catholic University, Brisbane, Melbourne and Strathfield campuses. Participants attended their allocated weekly tutorial where the study was carried out. The sample consisted of 34.9% males and 65.1% females, and had a mean age of 20.24(SD = 5.65). Materials: Both the scorer and experimenter were supplied with instructions; the scorer was also supplied with a score sheet to record correct sound localisations made by the participant. The experimenter was instructed to...

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Gulf Real Estate

interval estimate of the population mean sales price and population mean number of days to sell for Gulf View condominiums. Interpret your results. 5. Develop a 95% confidence interval estimate of the population mean sales price and population mean number of days to sell for No Gulf View condominiums. Interpret your results. 6. Assume the branch manager requested estimates of the mean selling price of Gulf View condominiums with a margin of error of $40,000 and the mean selling price of No Gulf View...

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Marriott Case Notes

did you use to calculate the cost of equity? Why did you choose these numbers? b. How did you estimate the required rate of return on the debt of the company and on the divisions? Should the debt cost differ across divisions? Why? c. Did you use arithmetic or geometric averages to measure average rates of returns or premia? Why? d. How did you measure the beta of each division? Of the firm? e. Should you take taxes into account? How? 5. What is the cost of capital for Marriott's contract services...

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