I am a grad student. I am struggling with core statistics courses: probability, statistical inference.
In probability, for example, prove unbiased estimator for uniform. In statistical inference, find the UMVUE for an estimator.
American stat dept has either highly qualified foreign students, or the couple of Americans who are struggling.
I would like to learn this and have a good foundation. Looking to pass the Ph.D. exam in the future.
All I do is study, but still get 60/100 on my midterms.
My problem is, the prof never tests on what he taught, but there are always students that passes, and continue on.
I don't know what to do anymore. What are your suggestions?