Answer Happy

Residuals vs fitted plots can be used to assess whether the four key assumptions for a simple linear regression model have been met. Each of the plots below displays an instance where at least one of these assumptions may not have been met. For each plot, identify which assumption has been most violated, if any. A. No assumptions have been violated B. The relationship between x and y cannot be assumed to be linea, C. The variability of points around the least-squares line is not roughly constant. D. The data does not appear to be from independent observations. B