Question

the mean of 15 numbers is 15 if two no. 18 and 12 are exclued then what will be the mean of remaining numbers??

Answer 1

mean is 15 again thanks

Answer 2

Answer:

The correct answer of this question is 15

Explanation:

Given - The mean of 15 numbers is 15 if two no. 18 and 12 are excluded.

To Find - Write what will be the mean of the remaining numbers?

Mean - Sum of all observations / Total observations

15 = Sum of all observations / 15

Sum of all observations  = 15 × 15

= 225

When two numbers are excluded

225 - (18 +12 )

225 - 30

Sum of all observations  = 195

Mean =  $\frac{195}{15-2}$

= $\frac{195}{13}$  = 15

The mean of the remaining numbers is 15

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