English, asked by deekshithakumbashi, 3 months ago

marks scored by 30 students of 10th standard in a unit test of mathematics is given below find the variance of the scores​

Answers

Answered by princeuplucky123449
3

Explanation:

Let x=0.

7

ˉ

So, 10x=7.

7

ˉ

x=0.

7

ˉ

On subtracting we get,

9x=7

⟹x=

9

7

=p/q

Where p=7 and q=9

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