Math, asked by sruthirajeshkanna, 2 months ago

The following distribution shows the daily pocket allowance of children of a locality. The mean

pocket allowance is ₹ 18. Find the missing frequency f.​

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Answers

Answered by induu2345
7

Answer:

class interval. class mark. f. xifi

11-13. 12. 7. 84

13-15. 14. 6. 84

15-17. 16. 9. 144

  1. 17-19. 18. 13. 234

19-21. 20. f. 20f

21-23. 22. 5. 110

23-25. 24. 4. 96

34+f. 752+20f

mean = 752+20f /34+f

18 (34+f) = 752+20f

612+18f = 752+20f

140= -2f

f = -70

Answered by rudrarb2403
0

f=20

solve by direct formula

Make me a brainlist.............

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