Fig. 1From: STEM courses are harder: evaluating inter-course grading disparities with a calibrated GPA modelThe difference between the RMSE (root mean square error) of observed GPA and the logistic model (2) as a predictor of student grades. Values to the right of center indicate that the model (2) is a better predictor than observed GPA, while points to the left indicate the reverse. This shows that the model (2) is a better overall predictor of student grades than observed GPABack to article page