Chat with us, powered by LiveChat Choose a quantitative variable. ?Measure it on two different samples of 10, drawn from two different populations. ?For example, you might ask the number of cups of coffee consumed daily by - EssayAbode

23 Jul Choose a quantitative variable. ?Measure it on two different samples of 10, drawn from two different populations. ?For example, you might ask the number of cups of coffee consumed daily by

Posted at 12:49h in Mathematics / Statistics by

Directions:  Choose a quantitative variable.  Measure it on two different samples of 10, drawn from two different populations.  For example, you might ask the number of cups of coffee consumed daily by 10 men vs 10 women.  Provide a description of the data selected, as well as the two different populations you chose.

Record the data, and for EACH sample, find the sample mean, the sample standard deviation and the five-number summary. Compare your two samples creating boxplots or histograms.

Summarize your results in a paragraph, including a description of how you collected your data and your interpretation of the results.  Does it appear that the two populations are similar, or different? Submit one file and save your document as a pdf file.

I send an example file on it

Statistics and Probability: Project #1 Example

Chosen Quantitative Variable: Number of cups of coffee a person drinks per day

Sample and Population

For the purpose of this assignment, each sample size will be 10. The chosen population will be male vs. female adult family and friends that I know. The purpose of this data collection will be to analyze the number of cups of coffee the male family or friends drinks in comparison to female family or friends in a typical day.

Data Gathered, Mean and Standard Deviation

 

Number of Cups of Coffee

Male

Male

Female

Female

Person 

Male

Female

1

5

1

2

4

-0.9

0.81

2

3

1

0

0

-0.9

0.81

3

2

3

-1

1

1.1

1.21

4

1

4

-2

4

2.1

4.41

5

0

0

-3

9

-1.9

3.61

6

4

0

1

1

-1.9

3.61

7

5

2

2

4

0.1

0.01

8

5

1

2

4

-0.9

0.81

9

3

3

0

0

1.1

1.21

10

2

4

-1

1

2.1

4.41

Total

30

19

28

20.9

Mean

3

1.9

Variance

3.11111111

2.32222222

Std. Dev

1.76383421

1.523888393

Five Number Summary

 

Male

Female

Median

3

1.5

Max_Value

5

4

Min_Value

0

0

Q1

2

1

Q3

5

3

***Insert a boxplot or histogram for each set of data here***

This could be done by hand (scan the document and include with the rest of project) or by using technology such as Excel.

Result Description

The data for this task was collected from a group of adult family and friends. The sample size was comprised of 10 male and 10 female adult family and friends. The purpose of collecting this data was to evaluate and compare the amount of coffee that males drink versus females. The results, as shown above, revealed that the male sample drinks more coffee than the female sample, and the standard deviation of the males is slightly higher than the females. This is also revealed in the Five Number Summary where the males have a higher median, and a higher value in quartiles 1 and 3 than the females. The graphs also confirm the results.

1

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