STATISTICS - Lab #6
Statistical Concepts:
Data Simulation
Discrete Probability Distribution
Confidence Intervals

Calculations for a set of variables

Open the class survey results that were entered into the MINITAB worksheet.

We want to calculate the mean for the 10 rolls of the die for each student in the class. Label the column next to die10 in the Worksheet with the word mean. Pull up Calc > Row Statistics and select the radio-button corresponding to Mean. For Input variables: enter all 10 rows of the die data. Go to the Store result in: and select the mean column. Click OK and the mean for each observation will show up in the Worksheet.

We also want to calculate the median for the 10 rolls of the die. Label the next column in the Worksheet with the word median. Repeat the above steps but select the radio-button that corresponds to Median and in the Store results in: text area, place the median column.

Calculating Descriptive Statistics

Calculate descriptive statistics for the mean and median columns that where created above. Pull up Stat > Basic Statistics > Display Descriptive Statistics and set Variables: to mean and median. The output will show up in your Session Window. Print this information.

Calculating Confidence Intervals for one Variable

Open the class survey results that were entered into the MINITAB worksheet.

We are interested in calculating a 95% confidence interval for the hours of sleep a student gets. Pull up Stat > Basic Statistics > 1-Sample t and set Samples in columns: to Sleep. Click the OK button and the results will appear in your Session Window.

We are also interested in the same analysis with a 99% confidence interval. Use the same steps except select the Options button and change the Confidence level: to 99.

Short Answer Writing Assignment

All answers should be complete sentences.

1.) When rolling a die, is this an example of a discrete or continuous random variable?...

...class survey results that were entered into the MINITAB worksheet.
We want to calculate the mean for the 10 rolls of the die for each student in the class. Label the column next to die10 in the Worksheet with the word mean. Pull up Calc > Row Statistics and select the radio-button corresponding to Mean. For Input variables: enter all 10 rows of the die data. Go to the Store result in: and select the mean column. Click OK and the mean for each observation will show up in the...

...For example, usage of N3 in the 43 nursing programs in Michigan substantially
terminologies form a subset of SNOMED CT, the comprehensive clinical terminology. The
SNOMED CT terminology is recognized by the National Centers for Vital and Health Statistics
and the Consolidated Health Informatics Initiative as an acceptable standard for the Federal
Patient Medical Record Information effort80 and is an ANA recognized terminology.75 Though
nursing-specific terminology...

...Statistics Vocabulary
Chapter 1
Data are collections of observations ( such as measurements, genders, survey responses)
Statistics is the science of planning studies and experiments, obtaining data, and then organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusion based on the data
A Population is the complete collection of individuals (scores, people, measurements and so on) to be studied. The collection is complete in the sense that...

...mean.
SAMPLING DISTRIBUTION : The probability distribution of the statistic is called a sampling distribution.
SIMPLE RANDOM SAMPLING : Refersto any sampling method that has the following properties. – the population consists of N objects – The sample consist of n objects – İf all posible samples of n objects. The sampling method is called simple random sampling.
STANDARD ERROR : İs a measure of the variability of a statistics – ıts an estimate of the standard...

...7.
2) Determined the class size:
Interval = (Largest observation – Smallest observation) / classes. So interval equal to (350-20) / 7= 47.14 or ~ 50.
3) Counted the number of observation that falls into each class.
Class limits
Frequency
20 - 70
6
70 - 120
18
120 - 170
23
170 - 220
11
220 - 270
1
270 - 320
4
320 - 370
1
Total
64
We interpret the frequency distribution by the table as following above from the 64 observations. The number of classes equal to 7 and the...

...
Figure 2- Representing the dilution scheme of unknown power drink sample
Regression Method
6. From linear regression output obtained from the UV spectrophotometer,
The line of equation, Abs = 0.04856 C – 0.02541
And correlation coefficient = 0.99615
7. Caffeine concentration in the diluted unknown sample for each replicate...

...
Contents
Question 1 3
Question 2a 5
Question 2b 6
Question 2c 7
Question 3a 8
Question 3b 8
Question 3c 10
Question 3d 11
Question 4 12
Question 5 14
References 15
Question 1
The sampling method that Mr. Kwok is using is Stratified Random Sampling Method. In this case study, Mr Kwok collected a random sample of 1000 flights and proportions of three routes in the sample. He divides them into...

...
Please complete the following problems in a Word document. Each problem is worth 3 points.
Chapter 4: 12, 14, 40
Chapter 5: 10, 22, 28
Chapter 6: 6, 16, 20, 24
Chapter 4
12. The Powerball lottery is played twice each week in 28 states, the Virgin Islands, and the District of Columbia. To play Powerball a participant must purchase a ticket and then select five numbers from the digits 1 through 55 and a Powerball number from the digits 1 through 42. To determine...

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