Question

Vaerage of 18 number is 14 while calculating the average a number 37 is taken as 73 by mistake find the correct average

Answer 1

we know That

average of terms = sum of terms / no.of terms

given average= 14

number of terms = 18

Sum of the terms be 'x'

14 = x /18

14×18 = x

252 = x

A number was taken mistakenly as 37 instead of 73..

so corrected sum = 252 - 37 + 73 = 212

the corrected average = 288/ 18 = 16