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Unformatted text preview: variation in ACT scores explained by the linear relationship between ACT scores and SAT scores is .25. There is a positive relationship between ACT scores and SAT scores. What is the slope of the OLS regression line? 5. A regression of test scores (TS, measured in points) on age (measured in years) using a random sample of high school students aged 1518 yields the following: In the sample, the average age is 16.2. What is the average test score in the sample? Problem Set #5 Bloodtype A B AB O US probability .1 .2 .3 .4 Chinese probability .2 .2 .2 .4 1. Below are the distributions of blood types in the US and China: Choose an Ameriacn and a Chinese at random, independently of eachother. What is the...
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 Spring '08
 ABDUS,S.
 Statistics, Regression Analysis, Standard Deviation, Education in the United States

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