Question

If the variance of observations is $\sigma ^ { 2 }$, then the variance of , α ≠ 0 is

• A. $\sigma ^ { 2 }$
• B. $a \sigma ^ { 2 }$
• C. $a ^ { 2 } \sigma ^ { 2 }$
• D. $\frac { \sigma ^ { 2 } } { a ^ { 2 } }$

Answer 1

Answer: (C)

$a ^ { 2 } \sigma ^ { 2 }$

Answer 2

It is obvious.