Question

the mean of 5 observation is 15 if the mean of first three observation is 14 and the mean of last three observation is 17 then find the third observation​

Answer 1

Answer:

Step-by-step explanation:

Siddhartharao77 Maths AryaBhatta

Given that Mean of 5 observations is 15.

Therefore the sum of observations = 15 * 5 = 75.

Given that mean of the first 3 observations is 14.

Therefore the sum of first three observations = 14 * 3 = 42.

Given that mean of the last 3 observations is 17.

Therefore the sum of the last three observations = 17 * 3 = 51.

Hence,

The third observation = (42 + 51) - 75

                                     = 93 - 75

                                     = 18.

Hope this helps!