Use the graphs and tables from W2 Midweek Assignment (be sure to first make the corrections needed based on your feedback from Week 2).
Create a brief Microsoft PowerPoint presentation describing your sample. Be sure to give an accurate and complete description, taking your instructor’s feedback from W2 Assignment into consideration.
instructor’s feedback Your histograms are a bit different. Do consider the bar charts or pie charts for categorical variables.
2
Age
Descriptive statistics
|
Age
|
|
|
|
|
Mean
|
20.325
|
|
Standard Error
|
0.224714919
|
|
Median
|
20
|
|
Mode
|
20
|
|
Standard Deviation
|
1.421221937
|
|
Sample Variance
|
2.019871795
|
|
Kurtosis
|
-0.608061095
|
|
Skewness
|
0.064134254
|
|
Range
|
5
|
|
Minimum
|
18
|
|
Maximum
|
23
|
|
Sum
|
813
|
|
Count
|
40
|
|
Confidence Level(95.0%)
|
0.454528826
|
Sex
|
sex
|
|
|
Frequency
|
Percent
|
Valid Percent
|
Cumulative Percent
|
|
Valid
|
Male
|
20
|
50.0
|
50.0
|
50.0
|
|
|
Female
|
20
|
50.0
|
50.0
|
100.0
|
|
|
Total
|
40
|
100.0
|
100.0
|
|
Height
|
Height
|
|
|
|
|
Mean
|
66.0125
|
|
Standard Error
|
0.348847691
|
|
Median
|
65.9
|
|
Mode
|
64.3
|
|
Standard Deviation
|
2.20630652
|
|
Sample Variance
|
4.867788462
|
|
Kurtosis
|
-1.706100286
|
|
Skewness
|
0.075488725
|
|
Range
|
6.6
|
|
Minimum
|
62.8
|
|
Maximum
|
69.4
|
|
Sum
|
2640.5
|
|
Count
|
40
|
|
Confidence Level(95.0%)
|
0.705611057
|
Years in college
|
Year in college
|
|
|
Frequency
|
Percent
|
Valid Percent
|
Cumulative Percent
|
|
Valid
|
freshman
|
10
|
25.0
|
25.0
|
25.0
|
|
|
sophomore
|
10
|
25.0
|
25.0
|
50.0
|
|
|
junior
|
10
|
25.0
|
25.0
|
75.0
|
|
|
senior
|
10
|
25.0
|
25.0
|
100.0
|
|
|
Total
|
40
|
100.0
|
100.0
|
|
Findings
The descriptive statistics of the data show that the mean age is 20.325 years, the median and mode age is 20 years. The age has a standard deviation and variance of 1.421221937 and 2.019871795 respectively. The range of the age is 5 years while the maximum and minimum sample ages are 23 and 18 respectively. The histogram of the sample age is skewed to the right. The sample has an equal number of males and females. The mean height is 66.0125 while median and mode heights are 65.9 and 64.3 respectively. The height has a standard deviation and sample variance of 2.20630652 and 4.867788462 respectively. The range of the sample height is 6.6 while the maximum and minimum heights are 69.4 and 62.8 respectively. The histogram of the sample height is skewed to the right. The sample shows that there is an equal number of respondents who are freshmen, sophomores, juniors, and seniors. Each year has 10 respondents.
References
Kaliyadan, F., & Kulkarni, V. (2019). Types of variables, descriptive statistics, and sample size. Indian dermatology online journal, 10(1), 82.
Kaur, P., Stoltzfus, J., & Yellapu, V. (2018). Descriptive statistics. International Journal of Academic Medicine, 4(1), 60.
Histogram
Frequency 20.5 21.33333333 19.66666667 18 22.16666667 More 18.83333333 11 10 6 5 5 3 0 Cumulative % 20.5 21.33333333 19.66666667 18 22.16666667 More 18.83333333 0.27500000000000002 0.52500000000000002 0.67500000000000004 0.8 0.92500000000000004 1 1
Bin
Frequency
Histogram
Frequency 68.3 65 63.9 More 67.2 62.8 66.1 11 10 9 6 3 1 0 Cumulative % 68.3 65 63.9 More 67.2 62.8 66.1 0.27500000000000002 0.52500000000000002 0.75 0.9 0.97499999999999998 1 1
Bin
Frequency
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