Question

answer this qtions plz

Answer 1

Given that the average of 10 is 5.

Sum of 10 observations = 10 * 5

                                        = 50.

Given that one of the data is replaced 5 by 15.

Then the new sum = 50 - 5 + 15

                               = 60



Therefore the average = 60/10

                                       = 6.


Hope this help!                        

Answer 2

Hi,

Please see the attached file!

Thanks