The given question is 98, 99, 100 , 90, 98 , 100
Mean=
In mathematics and statistics, the average is the average of a set of values. The mean can be calculated in a number of ways, including the simple arithmetic mean (adding the numbers and dividing the sum by the number of observations), the geometric mean, or the harmonic mean.
Sum of observations is 98+99+100+90+98+100
The summation is 585
The number of observations is 6.
=
= 97.5
So, the answer is 97.5