Learn essential techniques for handling outliers and collinearity in linear and multiple regression analysis through a 13-minute instructional video. Discover methods for identifying outlier data points with residual values deviating significantly from the regression model, and explore appropriate strategies for managing these anomalies. Examine the concept of collinearity (or multicollinearity) when explanatory variables show correlation, and understand scenarios where retaining correlated variables may be necessary, such as in cases of suspected confounding effects.