Study the following Minitab output from a regression analysis to predict y from x. a. What is
Question:
Study the following Minitab output from a regression analysis to predict y from x.
a. What is the equation of the regression model?
b. What is the meaning of the coefficient of x?
c. What is the result of the test of the slope of the regression model? Let α = .10.Why is the t ratio negative?
d. Comment on r2 and the standard error of the estimate.
e. Comment on the relationship of the F value to the t ratio for x.
f. The correlation coefficient for these two variables is -.7918. Is this result surprising to you? Why or whynot?
Transcribed Image Text:
Regression Analysis: Y versus x The regression equation is Y = 67.2-0.0565 X Predictor Coef SE Coef T Constant 67.231 5.046 13.32 0.000 -0.05650 0.01027 5.50 0.000 S-10.32 R-sg 62.7% R-Sq (adj ) -60.6% Analysis of Variance Source Regression Residual Error 18 1918.0 106.6 Total DF SS MS F 1 3222.9 3222.9 30.25 0.000 19 5141.0
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Related Book For
Business Statistics for Contemporary Decision Making
ISBN: 978-0470910184
6th Edition
Authors: Ken Black
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