In a regression analysis, the sum of the squared deviations between y and y-bar is SST = 200.0. If the sum of the squared deviations about the regression line is SSE = 40.0, what is the coefficient of determination?
Answer to relevant QuestionsGiven 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. Determine the least-squares regression line for the data in Exercise 15.5, then calculate the sum of the squared deviations between y and ŷ. For the regression equation obtained in Exercise 15.57, analyze the residuals by (a) Constructing a histogram, (b) Using a normal probability plot, (c) Plotting the residuals versus the x values, and (d) Plotting the ...Peoples Energy, Inc. reports the following data for operating revenue and net income for 2001–2005. Determine the least-squares regression line and interpret its slope. Estimate the net income if the operating revenue ...For the regression analysis of the data in Exercise 15.81: a. Use the 0.10 level in testing whether the population coefficient of correlation could be zero. b. Use the 0.10 level in testing whether the population regression ...
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