State Math SAT scores. Refer to the data on average state Math SAT scores for 2010 and 2014, Exercise 2.27 (p. 60). The first five observations and last two observations in the file are reproduced in the next table. In Exercise 2.128 (p. 108), you examined the relalionship between the 2010 Math SAT scores and the 2014 Math SAT scores with a soatterplot.
SPSS Output for Exercise 11.19
a. Write the equation of a straight-line model relating 2014 Math SAT score (y) to 2010 Math SAT score (x).
b. An SPSS simple linear regression printout for the data is shown. Find the least squares prediction equation.
c. Give a practical interpretation of the y-intercept of the least squares line. If a practical interpretation is not possible, explain why.
d. Give a practical interpretation of the slope of the least squares line. Over what
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Statistics for Business and Economics (13th Edition)
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