Year 8 Interactive Maths - Second Edition

Frequency Tables and the Mean

Example 7

A computer repair service received the following number of calls per day over a period of 30 days.
     6     5     6     9     7     4     2     4     7     8
     3     4     9     8     2     3     5     9     7     8
     9     7     5     6     7     7     4     6     2     4

Using a frequency table, find the average number of calls per day.  Round your answer to 1 decimal place.

Solution:

So, the average number of calls per day is 5.8.