What Does R2 In Gam Graph Represent
Think long and hard about causality. The axis is the value taken by the centred smooth. Pdf The Use Of Generalized Additive Models For Forecasting The Abundance Of Queets River Coho Salmon R-Squared is often said to measure the goodness of fit of a regression line however this can be misleading. What does r2 in gam graph represent . Generalized additive models in R GAMs in R are a nonparametric extension of GLMs used often for the case when you have no a priori reason for choosing a particular response function such as linear quadratic etc and want the data to speak for themselves. It is the contribution at a value of the covariate made to the fitted value for that smooth function. For example if the models R-squared is 90 the variance of its errors is 90 less than the variance of the dependent variable and the standard deviation of its errors is 68 less than the standard deviation of the dependent variable. How should you interpret R squared. Your graph should now look li...