Question

In the following grouped frequency distribution table class marks are given.
Class Marks 10 22 34 46 58 70
Frequency 6 14 20 21 9 5

(i) Construct class intervals of the data. (Exclusive class intervals)(ii) Construct less than cumulative frequencies and(iii) Construct greater than cumulative frequencies.

Answer 1

Answer:

here is your answer

Step-by-step explanation:

(i) find the difference between two succesive class marks

22-10=12

(find wheather the difference between 3very two succesive classe marks are same)

use the formula,x-h/2 and x+h/2

for 22-10=12 then

10-12/2 =4,10+12/2=16

●the first class interval is 4-16