Fig. 9From: P300 correlates with learning & memory abilities and fluid intelligence a Scatter plot of regression standardized residual against of regression standardized predicted value of dependent variable (RAPM Score). b Normal P-P plot of regression standardized residual, the plot of residual fit the expected pattern well enough to support the claim that the residual is normally distributed. c Normal distribution plot of regression standardized residual with zero mean value and unit variance (approx.). These plots verified the regression assumptions for fluid intelligence, i.e., normality, linearity and homoscedasticityBack to article page