Published by:
CGP EDU Academic Team
Published on: August 12, 2026
Let 
be ten observations of a random variable 
. If 
and 
where 
, then the standard deviation of these observations is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
JEE Main 2020
Here, 
So S.D. 
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