We select 100 people from the same representative population and ask who they will vote for. After conducting the survey, we collate their results and calculate the mean and standard deviation of voters over the five surveys. We pooled all our data and regress the potential factors using a stepwise regression model. We identified the following factors: gender, age, social networking activity (hours per day) social networking activity and in which state people reside. We decide touse alogistic regression model and proceed to a normality test.

After calculating a correlation matrix, I realize that age and social media activity are highly correlated (Pearson coefficient r = -0.95). Should we go back to the stepwise regression? Justify.