Question

The mean of 100 numerical observations is 51.28 what is the value of the sum of all 100 numbers

Answer 1

`(x_1+x_2+\cdots+x_(99)+x_(100))/(100)=51.28`

which means the sum of the 100 numbers must be


`x_1+x_2+\cdots+x_(99)+x_(100)=100*51.28=5128`