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Find the mean and variance for each of the data in Question: |
Answer» Solution :![]() LET assumed mean `A=20` Mean `=A+(sumf_(i)d_(i))/(sumf_(i))=20+(-40)/40=20-1=19` VARIANCE `sigma^(2)=1/(N^(2))[Nsumf_(i)d_(i)^(2)-(sumf_(i)d_(i))^(2)]` `=1/(40^(2))[40xx1776-(-40)^(2)]` `=44.4 =1=43.4` |
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