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Problem: Harmonic mean {{61,64,67,70,73},{5,18,42,27,8}} [ Calculator, Method and examples ]

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Your problem -> Harmonic mean {{61,64,67,70,73},{5,18,42,27,8}}

Harmonic mean :
 x f f/x 61 5 0.082 64 18 0.2812 67 42 0.6269 70 27 0.3857 73 8 0.1096 --- --- --- -- n=100 sum (f/x)=1.4854

HM of X = n/(sum (f/x))

=(100)/(1.4854)

=67.3226

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