Question

Kyle played four rounds of golf. His scores were

72, 75, 68, and 84. If he would like an exact mean
of 74 for five rounds, what must he score on the
next round?


71
72
73
74

Answer 1

71

Explanation:

Mean is Average

You can Find the Mean of a set of numbers by adding them all up and then dividing that number by the amount of numbers in the set.

72 + 75 + 68 + 84 = 231

231 / 4 = 57.75

This is his current mean.

Let's add his next score.

72 + 75 + 68 + 84 + 71 = 370
Divide by 5 instead of 4 because we added another number to the data set.

370 / 5 = 74