Chapter 12.1, Problem 3E

In Exercises 3-6, use the given data to do the following:

(a) Construct grouped frequency and relative frequency distributions, in a table similar to Table 3. (Follow the suggested guidelines for class limits and class width.)

(b) Construct a histogram.

(c) Construct a frequency polygon.

Exam Scores The scores of the 48 members of a sociology lecture class on a 50-point exam were as follows.

Use six classes with a uniform class width of 5 points, and use a lower limit of 21 points for the first class.