Question

The following list shows the number of video games sold per day at a video store.

Answer 1

Here is what your frequency/cumulative frequency table would look like.  The cumulative frequency is where you add all the frequencies from before it to get a sum after each interval.

               Frequency           Cumulative Frequency
0-25             8                              8
26-50           0                              8
51-75           4                             12
76-100         2                             14