AMS 5 Study Guide - Quiz Guide: Homoscedasticity, Educational Testing Service, Brie
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The correlation between these two variables was 0. 84. (a) (3 pts) true or false: test scores tend to be lower in states where a higher percentage of students take the test. While it might be true, the given data do not support the claim that iowa schools do a better job of teaching math than. The data do o er another possible explanation: perhaps the percentage of students taking the test in connecticut is higher than the percentage of students taking the test in iowa. = 0. 96 and 0 = y 1 x = 100 0. 96 100 = 4. This means that the predicted average score of all those that scored 120 at age 18 is (cid:98)y(120) = 4 + 0. 96 120 = 119. 2. (b) (3 pts) jane scored 115 on the test at age 18. Please include an accurate margin of error i. e. , your answer should be in the form a b.
