Question

a class of 30 student took mock exam in mathematics. they were given percentage of marks as follows :
62,20,18,50978,91,57,82,46,51,62,50,72,63,52,41,37,28928,46,71,75,36,28,44,90,51,28,60,18.
construct a frequency distribution table using equal class intervals ​

Answer 1

Answer:

Step-by-step explanation:

Class Interval

Frequency

10-20

20-30

30-40

40-50

50-60

60-70

 

10

12

7

7

8

3

 

(i) For Cumulative Frequency 30−40 frequency is 7

(ii) Size is 11

Mid point for cumulative frequency 30−40 is 35.

(iii) Range =70−10=60