Math, asked by malouvilla39, 8 hours ago

what is the mean deviation of 18 19 20 21 frequency 5 10 40 45?

Answers

Answered by gyaneshwarsingh882
0

Answer:

Step-by-step explanation:

Xi  f  c.f  ∣Xi−M∣  fi×∣Xi−M∣

10   7  7  20 140  

15  3  10  15  45

20   8  18  10  80

25  5   23  5  25

30  6  29 (Median Class)  0  0

35  8  37  5  40

40  4  41  10  40

45  9  50  15  135

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