Fig. 3From: STEM courses are harder: evaluating inter-course grading disparities with a calibrated GPA modelAverage GPA offset for students in each major. A grade difference of 1.0 is equivalent to a letter grade. Error bars display standard error of the mean (± 1 S.E.). The differences in the S.E. are largely determined by differences in the number of students in each program of studyBack to article page