Task: Earnings Per Share
The earnings per share (in dollars) for 12 companies selected at random from the list of Fortune 500 companies are:
0.55    0.62    1.43     1.58
3.25    1.92    6.39     3.36
1.03    3.29    6.41     7.32     
 
A. Find the mean of earnings per share.
B. Find the standard deviation of earnings per share.