In simple linear regression, one can use the plot of residuals versus the fitted values of y to check for a constant variance as well as to make sure that the linear model is in fact adequate.

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Vishal Veera · Accepted Answer

Final Answer : True, Explanation :  This is a true statement. The plot of residuals versus the fitted values is known as a residual plot and can be used to check for violations of the assumptions of linear regression, including the constant variance assumption and the linearity assumption. If the plot shows a clear pattern (such as a funnel shape), it may indicate that the assumptions are being violated and the linear model is not appropriate.

In simple linear regression, one can use the plot of residuals versus the fitted values of y to check for a constant variance as well as to make sure that the linear model is in fact adequate.

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