How can we divide the salary data {199,200,202,203,207,208,208,209,210,210,210,210,212,213,214,215,217,218,218,221} in six classes?

1 Answer
Nov 3, 2016

Please see below.

Explanation:

The difference between the smallest number being 199 and the largest being 221 is 22.

Hence let us divide them in 6 as follows:
198-201, 202-205, 206-209, 210-213, 214-217 and 218-221

Now let us put al salaries in relevant classes and it is

198-201 - color(red)(199-200)
202-205 -color(red)(203-202)
206-209 -color(red)(209-208-207-208)
210-213-color(red)(212-210-210-210-210-213)
214-217-color(red)(217-215-214
218-221-color(red)(221-218-218

Hence frequency distribution is

198-201-color(blue)2
202-205-color(blue)2
206-209-color(blue)4
210-213-color(blue)6
214-217-color(blue)3 and
218-221-color(blue)3