Case Measures of Central Tendency

Solve the following and a.  explain the difference between the mean, median, and mode.

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

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.

3.  Last year, nine employees of an electronics company retired. Their ages at retirement are listed below.
59    65    72    51    55    64    77    58    59 

     Find the Mode

4.  The amount of time (in hours) that Sam studied for an exam on each of the last five days is given below. Find the mean study time.
1.7     5.2     8.7     2.4     4.9

5.  The distances (in miles) driven in the past week by each of a      

     company's sales representatives are listed below:
     45    70    142    268    352    290

Find the median distance driven.