Chapter 4.2, Problem 17E

The following data are costs (in cents) per ounce for nine different brands of sliced Swiss cheese (consumerreports.org):

1. a. Calculate the variance and standard deviation for this data set. (Hint: See Example 4.8.)
2. b. If a very expensive cheese with a cost per slice of $1.50 (150 cents) was added to the data set, how would the values of the mean and standard deviation change?