Math, asked by nishitha2468, 3 months ago

Calculate the arithmetic mean of following frequency distribution.
250-300
200-250
Class-Interval
0-50
50-100
100-150
150-200
200-250
250-300

Frequency
20
40
45
40
25
30​

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Answers

Answered by deepp1505042015134
2

Answer:

ANSWER

 Class intervalMid value

  xi Frequency 

  fifixi cf  0−5035 2 50 2  50−10075 3 225 5  100−150125 5 625 10  150−200175 6 1050 16  200−250225 5 1127 21  250−300275 3 825 24  300−350325 1 325 25    ∑fi=25 ∑fixi=4225 ⇒  Mean=∑fi∑fixi=254225=169

⇒  We have N

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