Taylor took a test in both biology and math last week. the biology test had a mean of 70 and a standard deviation of 7 whereas the math test had a mean of 75 and a standard deviation of 10. taylor scored a 76 on the biology test and a 76 on the math test. on which test did she do better in comparison to the rest of the class

Question

Mathematics

Patience Richards

4 September, 05:40

Taylor took a test in both biology and math last week. the biology test had a mean of 70 and a standard deviation of 7 whereas the math test had a mean of 75 and a standard deviation of 10. taylor scored a 76 on the biology test and a 76 on the math test. on which test did she do better in comparison to the rest of the class

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Answers (1)

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Alisson Robles · Answer 1

We calculate her standard scores of the biology and math test.

z (biology) = (76-70) / 7 = 6/7

z (math) = (76-75) / 10 = 1/10

Hence she did better in biology