Consider the following sample data.

Sample A:7, 14, 21

Sample B:77, 84, 91

Sample C:1,080; 1,087; 1,094

(a)Find the mean and standard deviation for each sample.

Sample A: Sample B: Sample C:

Mean

Sample Standard Deviation

(b)What does this exercise show about the standard deviation?

multiple choice

• The idea is to illustrate that the standard deviation is not a function of the value of the mean.
• The idea is to illustrate that the standard deviation is a function of the value of the mean.