find the mean. with working. please anyone ?
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hhdsgutgg67777777777777777
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Marks:- f:- x:- f(x):-
0-14 8 8 8×8=64
14-28 20 21 20×21=420
28-42 28 35 28×35=980
42-56 18 49 18×49=882
56-70 26 63 26×63=1638
€f=100 €f(x)=3984
Mean=€f(x)/€f.
=3984/100.
=39.84.
I think this is your answer.
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