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
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
1
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