Health issues are a concern of managers, especially as they evaluate the cost of medical insurance. A recent survey of 150 executives at Elvers Industries, a large insurance and financial firm located in the Southwest, reported the number of pounds by which the executives were overweight. Compute the mean and the standard deviation.
Pounds Overweight Frequency
0 up to 6.......... 14
6 up to 12.......... 42
12 up to 18.......... 58
18 up to 24......... 28
24 up to 30.......... 8