For two data sets each of size is 5,

Question:

For two data sets each of size is 5, the variances are given to be 4 and 5 and the corresponding means are given to be 2 and 4 respectively, then the variance of the combined data set is :-

  1. $\frac{5}{2}$

  2. $\frac{11}{2}$

  3. 6

  4. $\frac{13}{2}$


Correct Option: , 2

Solution:

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