Find the mean
CI14-16 16-18 18-20 20-22 22-24.
3,2,54,7
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Answer:
CI:- f:- x:- f(x):-
14-16 3 15 3×15=45
16-18 2 17 2×17=34
18-20 5 19 5×19=95
20-22 4 21 4×21=84
22-24 7 23 7×23=161
€f=21 €f(x)=419
Mean=€f(x)/€f.
=419/21.
=19.95238095238.
I think this is your answer.
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