Quantitative variable

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.

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