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CH WA6 STA201

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Question;VARIABLE;VARIABLE NAME;sex;SEX;High School Percentile;HSP;Cumulative GPA;GPA;Age;AGE;Total Earned Credits;CREDITS;Classification;CLASS;School/college;COLLEGE;Primary Major;MAJOR;Residency;RESIDENCY;Admission Type;TYPE;ACT English Score;ENGLISH;ACT Math Score;MATH;ACT Composite Score;COMP;Recall from Chapter 1 (p. 30-31) that the Focus database and;Focus sample contain information on the undergraduate students at University of;Wisconsin-Eau Claire (UWEC). Now would be a good time for you to review the;discussion about these data sets (see above).;Open the Focuse same worksheet (FocusSample) in the;technology of your choice and do the following.;a. Find the linear;correlation coefficient between cumulative GPA and high school percentile for;the 200 UWERC undergraduate students in the Focus sample.;b. Repeat part (a);for cumulative GPA and each of ACT English Score, ACT Math Schore, and ACT;composite score.;c. Amon the variables;high school percentile, ACT English Score, ACT Math Score, and ACT Composite;Score, identify the one that appears to be the best predictor of Cumlative GPA.;Explain your reasoning.;Now perform a regression analysis on Cumulative GPA, using;the predictor variable identified in part (c), as follows.;d. Obtain and;interpret a scatterplot.;e. Find and interpret;the regression equation.;f. Find and interpret;the coefficient of determination.;g. Determine and;interpret the three sums of squares SSR, SE, and SST.;Click;to download theFocus Sample Excel file. (Note: After you;click the link it opens the preview and you have to click File - Download;to save it as an Excel file.);Text;used: Introductory Statistics 9th Edition by Neil A. Weiss;IBSN;978-0-321-69122-4

 

Paper#60665 | Written in 18-Jul-2015

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