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# If the mean of the data : 7,8,9,7,8,7,

Question:

If the mean of the data : $7,8,9,7,8,7, \lambda, 8$ is 8 , then the variance of this data is :-

1. 2

2. $\frac{7}{8}$

3. $\frac{9}{8}$

4. 1

Correct Option: , 4

Solution:

Solution not requierd