A bar graph shows pet ownership. The x-axis shows type of pet and represents dog, cat, golfish, and hamster. The y-axis represents number of students and ranges from 0 to 11 in increments of 1. The data shows 10 dogs; 8 cats; 2 goldfish; and 3 hamsters.
A pie chart divided into 6 inequal sections is titled Activity Hours per Week. The sections are labeled school, 40, 24 percent; eat, 21, 13 percent; sports or play, 15, 9 percent; social media or TV, 24, 14 percent; sleep, 56; and other 12, 7 percent.
Question
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)
Responses
Dana: 68, 74, 83, 80, 81, 82
Dana: 68, 74, 83, 80, 81, 82
Ara: 100, 98, 99, 97, 100, 100
Ara: 100, 98, 99, 97, 100, 100
Theo: 84, 88, 81, 85, 77, 76
Theo: 84, 88, 81, 85, 77, 76
Jose: 91, 93, 97, 96, 96, 96
3 answers
Ara's mean test score will increase the most because all of her previous scores are already very high (above 95%) compared to the others. With another perfect score of 100%, her mean will increase more compared to the others.
nope
The correct answer is Theo. Since his previous scores are lower than 100, adding a perfect score will increase his mean by a larger percentage compared to the others.
1 answer