Question

Chap:- Statistics :- Mean..!!

If the mean of the following distribution is 7.5 , find the missing frequency F:

Variable:- 5,6,7,8,9,10,11,12
Frequency:- 20,17,f,10,8,6,7,6

plz answer yrr​

Answer 1

Answer:

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Answer 2

Answer:

16

Variable : Frequency (f) fx

5 20 100

6 b 17 102

7 f 7f

8 10 80

9 8 72

10 6 60

11 7 77

12 6 72

Σ f = 74 + f 563 + 7f