For each of the 20 top-grossing U.S. films made during the 1990s, file XR15043 lists the domestic gross ticket sales versus foreign gross ticket sales (both in millions of U.S. dollars). Determine the linear regression equation relating the foreign gross as a function of the domestic gross. Identify and interpret the coefficients of correlation and determination.
Answer to relevant QuestionsFor n = 15 data points, r2 = 0.81. At the 0.05 level of significance, can we conclude that the true coefficient of correlation could be zero? A scatter diagram includes the data points (x = 2, y = 10), (x = 3, y = 12), (x = 4, y = 20), and (x = 5, y = 16). Two regression lines are proposed: (1) ŷ = 10 + x, and (2) ŷ = 8 + 2x. Using the least-squares criterion, ...Given the information below, calculate SST, SSR, and SSE, determine the coefficient of determination, then use ANOVA and the 0.05 level in testing whether r2 is significantly different from zero. “The Ford Edsel was sold only in the 1957–1959 model years, but the company made a big mistake in dropping it. If they had just fitted a regression line to the sales for these 3 years and extended it to 2006, they could ...Prior to being hired, the five salespersons for a computer store were given a standard sales aptitude test. For each individual, the score achieved on the aptitude test and the number of computer systems sold during the ...
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