observations are scattered. Objectives: * To use summary statistics to describe collection of data. * To use the mean‚ median and mode to describe how data “bunch up” * To use the range‚ variance and standard deviation to describe how data “spread out”. MEASURES OF CENTRL TENDENCY Measures of central tendency include three important tools – mean (average)‚ median and mode. Mean The arithmetic mean is the most common measure of central tendency. For a data set‚ the mean is the sum of the
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A horizontal analysis Income Statement was performed for Company G utilizing financial data from income statements in 2011 and 2012. A listing of ratios used‚ calculations and year-to-year comparison follows. 1. “Current Ratio†measures the ability to pay current liabilities with current assets. The current assets divided by current liabilities. In 2011 the current ratio was 1.86. By 2012‚ it decreased to 1.79 rating in the lower second quartile group in the industry. Company G’s ability
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Exam 1 Chapter 1 * In statistics the group we wish to study is called the population * A sample is a subset of the population which is used to gain insight about the population. Samples are used to represent a larger group‚ the population. * • Descriptive statistics – the collection‚ organization‚ analysis‚ and presentation of data. * Inferential statistics – uses descriptive statistics to estimate population parameters; an educated guess about the population based on sample
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finding out ‚the gender of the child‚the age of the child and the shoe size of the child. 2‚ 1.1 To see if the hypothesis is right or wrong.: I am going to conduct calculations using average and percentage ‚also I am going to find out the mean‚median and mode of this hypothesis‚I am also going to conduct graphs and charts using excel. ‚I am also going to collect data using a questionnaire ‚on the general public with a large age range of children. 3‚ 2.1‚ - 2.2 Collecting data. The primary
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3‚ 3‚ 3.2‚ 3.3‚ 3.5‚ 3.7‚ 3.9‚ 3.9‚ 4‚ 4‚ 4‚ 4.1‚ 4.2‚ 4.5‚ 4.5‚ 4.6‚ 4.9 Median – 3.95 Data from the females 4.2‚ 4.1‚ 4.2‚ 4.6‚ 3.9‚ 4.1‚ 4.7‚ 4.1‚ 4.2‚ 4‚ 4.2‚ 4.1‚ 4‚ 4.5‚ 4.3‚ 3.9‚ 4‚ 3.7 Ordered Values – 3.7‚ 3.9‚ 3.9‚ 4‚ 4‚ 4‚ 4.1‚ 4.1‚ 4.1‚ 4.1‚ 4.2‚ 4.2‚ 4.2‚ 4.2‚ 4.3‚ 4.5‚ 4.6‚ 4.7 Median = 4.1 As the median values differ the conclusion is that the females have a higher median as compared to the males. The mode for the data from Males 4‚ 4.6‚ 3.2‚ 3.9‚ 4
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Statistics - Statistics is the science of collecting organizing‚ presenting‚ analyzing and interpreting data. It turns Data into information through transformation. Population ! - Everyone in group ! ! - µ is the mean ! - σ is the standard deviation Sample! - Some/Portion of group ! -x is the mean!! -S is the standard deviation Measurement Scales Types of Data Categorical/Qualitative Categorical/Qualitative Nominal! -Data has category but no order Data that can only be in categories
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1.0 Executive summary Different people have their own hobbies and preferences that may influence their purchasing behaviour. Therefore‚ males‚ females have different preferences of buying a car. The purchasing behaviour also influenced by other factors‚ such as age‚ family size and life styles‚ for example‚ different aged children in families. This report will use graphs and statistics to highlight the different preferences between people of purchasing cars. 2.0 Background 2.1 Introduction
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Intructions:the 3 measures of central tendency‚ the standard deviation‚ and the five- number summary including the Min‚ Q1‚ Median‚ Q3‚ and Max. To derive these charts and summary figures‚ you are strongly encouraged to use Minitab‚ but for the nine measures (or summary numbers) 2.Numerical Summary Descriptive Statistics: Income ($1000) Variable Mean StDev Minimum Q1 Median Q3 Maximum Income ($1000) 43.74 14.64 21.00 30.00 43.00 55.00 67.00 Interpretation: C. Discuss
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Exam 2 - Math 3200 Spring 2013 Name : ID : General instructions: This exam has 13 questions‚ each worth the same amount. Check that no pages are missing and promptly notify one of the proctors if you notice any problems with your copy of the exam. Mark your ID number on the six blank lines on the top of your answer card using one line for each digit. Print your name on the top of the card. Choose the answer closest to the solution and mark your answer card with a PENCIL by shading in
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Remington’s Steakhouse Project Brian Jones Research Methods & Applications Dr. Jones August 25‚ 2011 Table of Contents Table of Contents 2 List of Tables 3 Introduction 4 The Research Objectives 4 The Research Questions 5 Literature Review 6 Answers to Research Questions 8 Recommendations to Remington’s 15 References 18 Annotated Bibliography 19 Appendix(ces) 22 List of Tables Table 1 Demographic Description of the Average Remington’s Patron9 Table 2 Reported Income by Remington’s
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