Published by:
CGP EDU Academic Team
Published on: August 13, 2026
The mean and standard deviation of 100 observations are 40 and 5.1, respectively. By mistake one observation is taken as 50 instead of 40. If the correct mean and the correct standard deviation are 
and 
respectively, then 
is equal to
Text Solution
Verified by ExpertsThe correct answer is:
C
Let the observations be 
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