Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Mean and standard deviation of 10 observations are 20 and 2 respectively. If 
is multiplied to each observation and then 
is subtracted from each of them, then new mean and standard deviation becomes half of it's original value. Then find 
Text Solution
Verified by ExpertsThe correct answer is:
B
If mean 
is multiplied by 
and then 
is subtracted from it,
then new mean 
and 
If standard deviation is multiplied by 
, new standard deviation 
is 
times of the initial standard deviation 
.
If 
If 
.
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