Maths Statistics ( Measures of Central Tendency and Dispersion ) NTA Abhiyas Question Single Correct MCQ
Published on: August 14, 2026

Two data sets each of size 10 has the variance as 4 and k and the corresponding means as 2 and 4 respectively. If the variance of the combined dataset is 5. 5, then the value of k is equal to

A
5
B
6
C
4
D
3

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Text Solution

Verified by Experts
The correct answer is:
A

5

Combined mean,

Combined variance

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