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
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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
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