Question 15 • Concepts in Probability and Statistics
Jacob has golf scores of 120 , 112 , 130 , 128 , and 124 He wants to have an average golf score of 118 What is the first step in determining what Jacob needs to score in his next golf game?
Answer
A
Determine the number of points that he needs in his next golf game.
B
Find the average score for the five golf games that Jacob has played.
C
Determine how many total points are needed to have an average of 118 .
D
Find the sum of all the numbers in the problem, 120 plus 112 plus 130 plus 128 plus 124 plus 118 .
Explanation
Jacob will have played six games after his next one. To average 118 over six games, first determine the total score that would give that average: 118 × 6 = 708. So the first step is to determine how many total points are needed; then he can subtract his five existing scores from 708 to find the score he needs next.
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