Consider the following plot of residuals versus x for a regression analysis. Based on the plot, what problem with the regression model or data is most noticeable?
A) The variances are not constant.
B) The mean of Y is not a linear function of X.
C) The variance of Y is not constant at each X.
D) There is an outlier in the data.

Question

Consider the following plot of residuals versus x for a regression analysis.  Based on the plot, what problem with the regression model or data is most noticeable?
A) The variances are not constant. 
B) The mean of Y is not a linear function of X. 
C) The variance of Y is not constant at each X. 
D) There is an outlier in the data.

Quizplus · Accepted Answer

The Answer of Consider the following plot of residuals versus x for a regression analysis.  Based on the plot, what problem with the regression model or data is most noticeable?
A) The variances are not constant. 
B) The mean of Y is not a linear function of X. 
C) The variance of Y is not constant at each X. 
D) There is an outlier in the data.

Consider the Following Plot of Residuals Versus X for a Regression