(Answered) The following data give the prices of seven textbooks

Statistics

The following data give the prices of seven textbooks randomly selected from a university bookstore.

$89

$170

$104

$113

b) Is the sum of these deviations zero (yes or no)?

c) Calculate the range (do not include unit).

d) Calculate the variance.

e) Calculate the standard deviation (round to one decimal place).

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