Question

The mean of five numbers is 27.If one number is excluded their mean is 25.Find the excluded number?

Answer 1

Mean = (sum of observations)/(no. of observations)
______________________

When numbers were 5,

Mean = (sum of 5 numbers)/5

27 =(sum of 5 numbers)/5

27*5 = sum of 5 numbers

135 = sum of 5 numbers

________________________

When one number excluded,

Mean = (sum of 5 numbers - excluded no.)/4

25 = (135 - excluded number)/4

25*4 = 135-excluded number

100 = 135 - excluded number


Excluded number =135-100

Excluded number = 35


I hope this will help you


-by ABHAY

Answer 2

Answer:

The number is 35 .

Hope this helps you