Question: 15. Two samples are as follows: Sample A: 7, 9, 10, 8, 9, 12 9 Sample B: 13, 5, 9, 1, 17, a. Just by

15. Two samples are as follows: Sample A: 7, 9, 10, 8, 9, 12 9 Sample B: 13, 5, 9, 1, 17,

a. Just by looking at these data, which sample has more variability? Explain your answer.

b. Compute the mean and the standard deviation for each sample.

c. In which sample is the mean more representative (more "typical") of its scores? How does the stan- dard deviation affect the interpretation of the mean?

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