Question
The length (in pages) of math research projects is given below. Using this information, calculate the...
The length (in pages) of math research projects is given below. Using this information, calculate the mean and the standard deviation regarding the data set as a sample. 33, 16, 36, 19, 29, 10, 25, 16, 22
Homework Answers
Answer #1
Sample dataset: n=9
Mean= Sum of observations/ Number of observations = 206/9= 22.888889
Standard deviation for a sample: 
| X | Mean(x) | (X-Mx) | (X-Mx)^2 | |
| 33 | 22.88889 | 10.11111 | 102.2346 | |
| 16 | 22.88889 | -6.88889 | 47.45679 | |
| 36 | 22.88889 | 13.11111 | 171.9012 | |
| 19 | 22.88889 | -3.88889 | 15.12346 | |
| 29 | 22.88889 | 6.111111 | 37.34568 | |
| 10 | 22.88889 | -12.8889 | 166.1235 | |
| 25 | 22.88889 | 2.111111 | 4.45679 | |
| 16 | 22.88889 | -6.88889 | 47.45679 | |
| 22 | 22.88889 | -0.88889 | 0.790123 | |
| Mean | 22.88889 | Sum | 592.8889 |
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