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Destiny scores a 75% on her physics test with a z score of 2.34 and an 87% on her algebra 2 test with a z score of 1.52. In which class did she perform better relative to peers?

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Final answer:

Destiny performed better in her physics class with a z-score of 2.34 compared to her algebra 2 class where she had a z-score of 1.52, since her physics z-score is higher.

Step-by-step explanation:

Understanding z-scores helps us determine how a student has performed relative to their peers. A z-score indicates how many standard deviations an element is from the mean. The higher the z-score, the better the performance compared to the average of the peer group.

Destiny's physics test score had a z-score of 2.34, which means she scored 2.34 standard deviations above the mean for her class. On her algebra 2 test, she had a z-score of 1.52, indicating she was 1.52 standard deviations above the class mean. Since a z-score of 2.34 is higher than a z-score of 1.52, we can conclude that Destiny performed better relative to her peers in her physics class than she did in her algebra 2 class.

User Robert Owen
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