R square is a simple but powerful metric that shows how much variance is explained by the model. ... If you want to go further in linear regression, check my Google Page Speed Insights OLS model.

10.3.1 Scatterplot matrix. Recall that we use SAS’s scatterplot matrix feature to quickly scan for pairs of explanatory variables that might be colinear. To do this in R we must first make sure we ...

Kevin Ferrigan updates his game-by-game DRE metric with a few new tweaks. If you use DRE, make sure to check this out for the latest version.

The S&P Price Regression Trend Line is a commonly used metric to gauge the stock market’s valuation. This metric has merit to the extent it identifies whether the S&P is deviating from long-term ...