AMS 5 Study Guide - Quiz Guide: Homoscedasticity, Educational Testing Service, Brie
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AMS 5 Full Course Notes
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The correlation is most likely to be 0. 5 (among the numbers o ered) because the correlation is negative (so 0. 9 and. 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. If the correlation between x and y is negative, then y (average test score) will tend to decrease when x (percentage of population taking the test) increases. While it is possible that math education is better in iowa than in connecticut, these data do not show that. It is possible for example that the percentage of students who take the test in connecticut is higher than the percentage in iowa, and it is this (possible) fact that accounts for the lower average in connecticut. Using the regression equation, the estimated average score at age 35 of people who scored 120 at age 18 is.
