Question

Will Medal & Fan

If the mean of this data is 95, find the missing data.

103,99,90,86,105,96,__

Answer 1

@midnighti

Answer 2

The mean is the sum of values divided by the number of values.

Answer 3

You can call the missing value - "x"

Answer 4

And therefore you are having,

\(\color{#000000 }{ \displaystyle \frac{103+9+9+86+105+96+x }{7} =95 }\)

I am dividing by 7, because there are 7 values.
And I set it equal to 95, because I know that the mean (or the "average") is 95.