Earings per share. The earnings per share (in dollars) for 12 companies selected at random from the list of Fortune 500 companies are: 0.96
1.13
7.75
1.03
1.05
2.15
5.15
1.78
7.79
4.68
8.48
8.32
a. Find the mean of the earnings per share. $
(Type an integer or a decimal. Round to two decimal places.)
b. Find the standard deviation of the earnings per share. $
(Type an integer or a decimal. Round to two decimal places.)