Question

What number added to the number set would result in a mean score of 5? 10, 5, 3

Answer 1

2

Explanation:

If you think that you are going to be dividing the final number by 4 to get five, you set up a simple equation (18+x)/4=5

Answer 2

Mean is the average.

For 4 scores to have an average of 5, the total points would need to equal 5 x 4 = 20

the total of the first 3 scores is: 10 + 5 + 3 = 18

The final score would need to be 20-18 = 2