Statistics - R (Big R)
1 - About
R (Big R) is a complex model with multiple correlation coefficient. R is an accuracy statistic for the overall model.
- the correlation between the predicted scores and the observed scores
- how well the model are doing in predicting the observed scores.
For a simple regression, R (Big R) is just the correlation coefficient, little r squared but when we build bigger models with more and more predictors we will get a multiple correlation coefficient and particularly R squared.