Question

The mean of 6 observations 13, 18, 31, 7, 15 and k is 17. The value of k is ______.

विकल्प

• 12

• 22

• 16

• 18

Answer 1

The mean of 6 observations 13, 18, 31, 7, 15 and k is 17. The value of k is 18.

Explanation:

Mean = `"Sum of observations"/6`

So, sum = 17 × 6 = 102.

Sum of given numbers = 13 + 18 + 31 + 7 + 15 = 84.

Therefore, k = 102 – 84 = 18.