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17. For the data in the following sample: 8 1 5 1 5 a. Find the mean and the standard deviation. b. Now change the

17. For the data in the following sample: 8 1 5 1 5

a. Find the mean and the standard deviation.

b. Now change the score of X = 8 to X = 18, and find the new mean and standard deviation.

c. Describe how one extreme score influences the mean and standard deviation.

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