Question 20 of 25 • SVH #CR Statistical Modeling 25-26
A teacher gave a unit test to both of her statistics classes. The mean test grade for Class A was 77 points, with a standard deviation of 5 points, whereas the mean test grade for Class B was 80, with a standard deviation of 7 points. Kyle, in Class A, received an 82 on the test, and Caleb, in Class B, received an 87. Whose performance on the unit test was better relative to their class?
Answer
A
Caleb did better because his z-score is higher than Kyle’s.
B
Kyle did better because his z-score is higher than Caleb’s.
C
Caleb did better because his z-score is closer to the mean.
D
They both performed the same because their z-scores have the same value.