A) -4
B) -8
C) 8
D) 4
Correct Answer: D
Solution :
We know that, if X and Y tow variables such that \[Y=\frac{X}{a},a\ne 0\] Then, \[{{\sigma }_{Y}}=\frac{1}{|a|}{{\sigma }_{X}}\] \[\therefore \]SD of the new observation \[=\frac{8}{|-2|}=4\]You need to login to perform this action.
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