Annual sales in millions of dollars for 21 pharmaceutical companies
Annual sales, in millions of dollars for 21 pharmaceutical companies follow.


a. Provide a five-number summary.
b. Compute the lower and upper limits.
c. Do the data contain any outliers?
d. Johnson & Johnson’s sales are the largest on the list at $14,138 million. Suppose a data entry error (a transposition) had been made and the sales had been entered as $41,138 million. Would the method of detecting outliers in part (c) identify this problem and allow for correction of the data entry error?
e. Show a boxplot.
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