The article Cost-Effectiveness in Public Education (Chance [1995]: 3841) reported that for a regression ofy = average
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The article “Cost-Effectiveness in Public Education” (Chance [1995]: 38–41) reported that for a regression ofy = average SAT score on x = expenditure per pupil, based on data from n = 44 New Jersey school districts, a = 766, b = 0.015, r2 = .160, and se = 53.7.
a. One observation in the sample was (9900, 893). What average SAT score would you predict for this district, and what is the corresponding residual?
b. Interpret the value of se.
c. How effectively do you think the least-squares line summarizes the relationship between x and y? Explain your reasoning.
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a To predict the average SAT score for the district with an expenditure per pupil of 9900 x 9900 we ...View the full answer
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Related Book For 
Introduction To Statistics And Data Analysis
ISBN: 9780495118732
3rd Edition
Authors: Roxy Peck, Chris Olsen, Jay L. Devore
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