The mean test scores for each student before the latest test are as follows:
Jose: (91+93+97+96+96+96)/6 = 95.5
Theo: (84+88+81+85+77+76)/6 = 82.8
Dana: (68+74+83+80+81+82)/6 = 78
Ara: (100+98+99+97+100+100)/6 = 98.3
After getting 100% on the latest test, the new mean test scores for each student would be:
Jose: (91+93+97+96+96+96+100)/7 = 94.9
Theo: (84+88+81+85+77+76+100)/7 = 83.3
Dana: (68+74+83+80+81+82+100)/7 = 82.7
Ara: (100+98+99+97+100+100+100)/7 = 99.1
Therefore, Ara's mean test score will increase the most from 98.3 to 99.1.
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? (1 point)
• Jose: 91, 93, 97, 96, 96, 96
• Theo: 84, 88, 81, 85, 77, 76
• Dana: 68, 74, 83, 80, 81, 82
• Ara: 100, 98, 99, 97, 100, 100
1 answer
1 answer