in a sample survey based on 100 families in an area, it was found that they had on average 14.8 medications on hand . if the coefficient of variation is 20 percent. what is the variation of sample data
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Answer:
8.7616
Explanation:
C.V=s.d divided by mean mutiply by100
20*14.8=s.d*100
296=s.d*100
296 divided by 100=standard deviation
s.d=2.96
TAKING SQUARE ON BOTH SIDES
S^2=(2.96)^2
S^2=8.7616
VARIANCE =8.7616
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