The mean test score is calculated by adding up all the scores and dividing by the number of tests taken.
For Dana:
(68 + 74 + 83 + 80 + 81 + 82) / 6 = 78
For Ara:
(100 + 98 + 99 + 97 + 100 + 100) / 6 = 98
For Jose:
(91 + 93 + 97 + 96 + 96 + 96) / 6 = 95.5
For Theo:
(84 + 88 + 81 + 85 + 77 + 76) / 6 = 82.5
The biggest increase in mean score will be for Theo, going from a mean score of 82.5 to a perfect score of 100, an increase of 17.5 points.
Theo, Ara, Jose, and Dana all got 100 percent on their latest math test. Their scores on the previous six tests are listed. Whose mean test score will increase the most?
Responses
Dana: 68, 74, 83, 80, 81, 82
Ara: 100, 98, 99, 97, 100, 100
Jose: 91, 93, 97, 96, 96, 96
Theo: 84, 88, 81, 85, 77, 76
1 answer