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Title: If all of the values of an independent variable x are equal, then regressing a dependent variable y ... Post by: leo su on Mar 3, 2018 If all of the values of an independent variable x are equal, then regressing a dependent variable y on this independent variable x will result in a coefficient of determination (r2) equal to:
a. -1.3 b. -1.0 c. 0.0 d. 1.0 e. 1.3 Q. 2 If the sum of squares for error (SSE) is equal to zero, then the coefficient of determination (r2) must be: a. 1.5 b. 1.0 c. 0.0 d. -1.0 e. 100 Q. 3 In a simple linear regression problem, if the coefficient of determination is 0.96, this means that: a. 96 of the y values are positive b. 96 of the total variation in y can be explained by the regression line c. 96 of the x values are equal d. 90 of the total variation in x can be explained by regression line e. 90 of the total variation in y can be explained by the regression line Q. 4 In a regression setting, which, if any, of the following is not an assumption about the random error e? a. The errors are linearly correlated. b. The errors are normally distributed with a mean of 0 and a common variance . c. The errors are independent in a probabilistic sense. d. All of these are assumptions about the random error. e. None of these. Q. 5 In a simple linear regression problem, if the coefficient of determination is 0.95, this means that 95 of the variation in the independent variable x can be explained by regression line. Indicate whether the statement is true or false Q. 6 In a simple linear regression model, if you found that the true regression coefficient is significantly greater than zero, then you may also conclude that the two variables are positively correlated. Indicate whether the statement is true or false Q. 7 In a simple linear regression analysis, if the t-test statistic for testing the significance of the regression model is 3.4, then the F-test statistic from the ANOVA table for regression will be 11.56. Indicate whether the statement is true or false Title: If all of the values of an independent variable x are equal, then regressing a dependent variable y ... Post by: Michealg22 on Mar 3, 2018 Content hidden
Title: If all of the values of an independent variable x are equal, then regressing a dependent variable y ... Post by: leo su on Mar 3, 2018 Thank you soooo very much, it was really helpful and kind of you to answer my q's
Title: If all of the values of an independent variable x are equal, then regressing a dependent variable y ... Post by: Michealg22 on Mar 3, 2018 You're welcome, once again
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