q1.

Given are data for two variables, x and y. X,- 6 11 15 18 20 \"In... (a) Develop an estimated regression equation for these data. (Round your numerical values to two decimal places.) i}: (b) Compute the residuals. (Round your answers to two decimal places.) Ruiduals (c) Develop a plot of the residuals against the independent variable x. 6- N N ON Residuals Residuals Residuals O o N N -2 -4 -4 -6- -6- 0 5 10 15 20 25 0 5 10 15 20 25 0 5 10 15 20 25 O X X X N Residuals O A N 5 10 15 20 25 O X Do the assumptions about the error terms seem to be satisfied? O The plot suggests curvature in the residuals indicating that the error term assumptions are not satisfied. O The plot suggests curvature in the residuals indicating that the error term assumptions are satisfied. O The plot suggests a funnel pattern in the residuals indicating that the error term assumptions are not satisfied. O The plot suggests a generally horizontal band of residual points indicating that the error term assumptions are satisfied. The plot suggests a generally horizontal band of residual points indicating that the error term assumptions are not satisfied.(d) Compute the standardized residuals. (Round your answers to two decimal places.) (e) Develop a plot of the standardized residuals against y. 3 3 3 N Standardized Residuals O Standardized Residuals Standardized Residuals o O -1 -1 -1 -2 -2- -2 -3 -3 -3 0 5 10 15 20 25 30 0 5 10 15 20 25 30 0 5 10 15 20 25 30 O A w N Standardized Residuals -1 -2 -3 5 10 15 20 25 30 O y What conclusions can you draw from this plot? The standardized residual plot has a different shape than the original residual plot. The plot suggests a generally horizontal band of residual points indicating that the error term assumptions are satisfied. The standardized residual plot has the same shape as the original residual plot. The plot suggests curvature in the residuals indicating that the error term assumptions are not satisfied. The standardized residual plot has the same shape as the original residual plot. The plot suggests a generally horizontal band of residual points indicating that the error term assumptions are not satisfied. The standardized residual plot has a different shape than the original residual plot. The plot suggests a funnel pattern in the residuals indicating that the error term assumptions are not satisfied. The standardized residual plot has a different shape than the original residual plot. The plot suggests curvature in the residuals indicating that the error term assumptions are satisfied