The following is a residuals vs fitted plot arising from a linear regression model. Which of the following statements are correct? The residual vs fit plot above seems to indicate that the presence of an outlier The residual vs fit plot above seems to indicate that the relationship between the dependent and independent variables is non-linear The residual vs fit plot above seems to indicate that the relationship between the dependent and independent variables is linear. The residual vs fit plot above seems to indicate the presence of heteroscedasticity