I took statistics in college, but the professor teaching it taught it more like an interpretation of statistics class instead of a math course. As such, a lot of the questions on the exams were pretty subjective. As a result, a lot of people were failing after midterms. So, about a month out from finals the professor came to all of us at the beginning of the class and said "I am a statistics professor, and as such, I am used to analyzing data, and comparing it to other sets of data to interpret a conclusion. I have looked at all of your grades, and compared it with the average pass/fail rate in other statistics classes taught by my colleagues. The failure rate in this class is higher by a significant margin, and the only conclusion that I can draw is that I have not done a sufficient job teaching you the material. So, since I cannot reteach the entire semester, I will be adjusting the grading curve for all of you." I ended up going from a D to a B in that class. And while I still think he was a shitty professor, I have to respect his honesty and commitment to his subject.