Published by:
CGP EDU Academic Team
Published on: August 13, 2026
One set containing five numbers has mean 8 and variance 18 and the second set containing 3 numbers has mean 8 and variance 24. Then the variance of the combined set of numbers is
Text Solution
Verified by ExpertsThe correct answer is:
B
Here 
, 
, 
, 
, 
combined mean 
Combined variance 
,
where 
, 
Now, 
Combined variance 
= 
.
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