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CGP EDU Academic Team
Published on: August 13, 2026
The mean and variance of 8 observations are 10 and 13.5, respectively. If 6 of these observations are 5, 7, 10, 12, 14, 15, then the absolute difference of the remaining two observations is:
Text Solution
Verified by ExpertsThe correct answer is:
C
JEE Main 2020
Let the two remaining observations be 
and 
.
… (i)
var 
… (ii)
From (i) and (ii)
or 
So, 
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