Question

20-30
30=40
40-50
50-60
60-70
70-30
Class
Interval
Frequency
10
6
12
5
9
calculate mean using short-cut method.​

Answer 1

Answer:

bhhhbjjh

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Step-by-step explanation:

uhhiihi9kjjjjjjjhbbbjjo.....

Answer 2

Answer:

i can't understand the question

please write it again properly

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