Question

if a histogram is constructed from the following frequency distribution, how many classes will it have?

(1 point)

7

80

10

20

Explanation:

Step1: Understand the concept of classes in a histogram

In a frequency distribution table for a histogram, each distinct interval (here, each age value represents an interval) is a class.

Step2: Count the number of rows (excluding header)

Count the number of rows in the table that have age - frequency pairs. There are 7 rows with age values (20, 30, 40, 50, 60, 70, 80) and their corresponding frequencies.

Answer:

7