Using the following data (which are sample exam scores), construct a Grouped Frequency Distribution on your scrap paper.

11 25 22 19 23 21 17 27 21 21 23 28 10 29

Intervals Real Limits Midpoint f cf r% c%

10 - 13

14 - 17

18 - 21

22 - 25

26 - 29

Use the Grouped Frequency Distribution that you constructed on your scrap paper in the previous question to answer the following:

What percentage of people scored between (and including)26and 29?