Question

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The coefficients of variations for the two distributions are 60 and 70 and its standard deviations are 21 and 16 respectively. Determine its arithmetic mean.​

Answer 1

Answer:

Answer

For first distribution:

Coefficient of variation (cv)=60

We know that

cv=

Mean

standard deviation

×100

60=

Mean

21

×100

Mean=

60

21

×100

=35

For sound distribution

Coefficient of variation (cv)=70

standard deviation =16

We know that

cv=

Mean

stand and deviation

×100

70=

Mean

16

×100

Mean =

70

16

×100=22.85