R-squared values range from 0 to 1, indicating the fit and explanatory power of a regression model. Values below 0.3 suggest weak explanatory power; above 0.7 indicate strong relationships. In ...

How well the data fits the regression model on a graph is referred to as the goodness of fit. ... It's also called r 2 or r-squared. The value should be between 0.0 and 1.0.