HW1 - Biological Statistics II Biometry 3020 / Natural...

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Unformatted text preview: Biological Statistics II Biometry 3020 / Natural Resources 4130 / Stat Sci 3200 Homework 1 Due on Thursday February 4 The questions below are from Kutner, Nachtsheim, Neter and Li Applied Linear Statistical Models, but some of these questions could be looked at using Splus/R in a manner similar to what was done with the Sparrow data in class. Data for certain problems (like the GPA data used in 1.19) may be found at the website: http://apps.csom.umn.edu/Nachtsheim/5th The inside cover of the back of the book also provides directions for getting data and other information including a student solutions manual. (Sorry not all the solutions are provided, but many are.) The following Splus/R commands might prove useful: names(CH01PR19)=c("GPA","ACT") plot(CH01PR19$ACT,CH01PR19$GPA) GPA.lm = lm(GPA~ACT,data=CH01PR19) summary(GPA.lm) anova(GPA.lm) new.ACT = data.frame(ACT=28) predict(GPA.lm,newdata=new.ACT,se.fit=T) 1. (KNNL 1.5, 1 point) When asked to state the simple linear regression model, a student wrote it as follows: . } { 1 i i i X Y E ε β β + + = Do you agree with this answer?...
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This note was uploaded on 04/17/2010 for the course STSCI 3200 taught by Professor Sullivan during the Spring '10 term at Cornell University (Engineering School).

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HW1 - Biological Statistics II Biometry 3020 / Natural...

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