question_answer

If each observation of a raw data whose variance is \[{{\sigma }^{2}}\], is multiplied by l, then the variance of the new set is [Pb. CET 1993]

A)                 \[{{\sigma }^{2}}\]

B)                 \[{{\lambda }^{2}}{{\sigma }^{2}}\]

C)                 \[\lambda +{{\sigma }^{2}}\]

D)                 \[{{\lambda }^{2}}+{{\sigma }^{2}}\]