To look for outliers and to check the Equal Variance Assumpt
     To look for outliers, and to check the Equal Variance Assumption, a  should be created.  To look for outliers, and to check the Equal Variance Assumption, a  should be created.  histogram of the response variable Normal probability plot of the response variable residual plot histogram of the explanatory variable 
  
  Solution
Residual plots are used to assess the equal variances assumptions. So, outliers are detected by using residual plots in regression analysis. Therefore, the appropriate option is RESIDUAL PLOT.

