Interactive model · multiple regression case study
💼 What Makes a Couple Save for Retirement?
194 couples, one question: what predicts the share of income they put into tax-deferred retirement plans? Toggle predictors in and out and the regression refits instantly. Drop the one that isn't pulling its weight, then plan for a couple of your own.
Matches the team's Excel analysis: with all four predictors R² = 0.453 and Children is not significant (p = 0.954); dropping it leaves R² unchanged with F = 52.47.
Predictors in the model
Coefficients
Green = significant at 5% · orange = can be dropped
Which predictor matters most?
Standardised effect: change in % invested for a one-standard-deviation change in the predictor