Basic Statistics Measures of Central Tendency

Basic Statistics Measures of Central Tendency

1. Last year, nine employees of an electronics company retired. Their ages at retirement are listed below. Find the mean retirement age, to the nearest year.

                 55   77   64   77 69   63 62 64 85

Solution

[55+77+64+77 +69+63+62+64+85] / 9 = 68.44 ~ 68 yrs

2. A store manager kept track of the number of newspapers sold each week over a seven-week period. The results are shown below.

                 27    30    201    152    218    212    239

Find the median number of newspapers sold.       

Solution

Rearranging the data we get, 27 30 152 201 212 218 239

The median number of newspapers sold is ...