Question

Points luto rai

The variance of the given data 2, 4, 5, 6, 8, 17 is 23.33. Then find the variance for the data 4, 8, 10, 12, 16, 34.

(a) 23.23 (b) 25.33 (c)46.66 (d)48.66

Solution:​

Answer 1

Answer:

Explanation:Answer

Correct option is

D

93.32

Given observation is, 4, 8, 10, 12, 16, 34.

Here n=6,∑x  

i

2

​

=4  

2

+8  

2

+10  

2

+12  

2

+16  

2

+34  

2

=1736,∑x  

i

​

=4+8+10+12+16+34=84

Hence required variance =  

n

∑x  

i

2

​

 

​

−(  

n

∑x  

i

​

 

​

)  

2

=93.33