Find the missing frequency (f) , if the mean of the following data is 18 CI f 11-13 7 13-15 6 15-17 9 17-19 13 19-21 f 21-23 5 23-25 4
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f the following data is 18 CI f 11-13 7 13-15 6 15-17 9 17-1
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Answer:
F:- 20
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