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Question: If each observation of a raw data whose variance is \(\sigma ^ { 2 }\), is multiplied by λ**,** then...

If each observation of a raw data whose variance is σ2\sigma ^ { 2 }, is multiplied by λ**,** then the variance of the new set is

A

σ2\sigma ^ { 2 }

B

λ2σ2\lambda ^ { 2 } \sigma ^ { 2 }

C

λ+σ2\lambda + \sigma ^ { 2 }

D

λ2+σ2\lambda ^ { 2 } + \sigma ^ { 2 }

Answer

λ2σ2\lambda ^ { 2 } \sigma ^ { 2 }

Explanation

Solution

It is obvious.