Question

If the mean of the 20 observation is 17. If 25 is added in the sum of observations. Find the mean.​

Answer 1

The answer is 20/17+25

Answer 2

mean of 20 objervations= 17

sum of 20 objervations = 20×17

= 340

according to question

25 is added in the sum of objervations

= 340+25

= 365

I hope it help you