Hello, I work for a college which is interested in exploring whether or not students in Fall 2019 had a better/worse GPA, on average, compared to students in Fall 2020, by course.
Looking at, say, Psychology 101, is it valid for me to do a t-test comparing the mean GPA for Psychology 101 in Fall 2019 vs. Fall 2020, using the entire population of students who took these courses? Are there any special assumptions/violations that I should be concerned about, or is this a pretty safe statistical exercise?
I've taken many statistics courses throughout my life, but it's been many years and I am rusty, so any guidance is much appreciated. Thank you!
Looking at, say, Psychology 101, is it valid for me to do a t-test comparing the mean GPA for Psychology 101 in Fall 2019 vs. Fall 2020, using the entire population of students who took these courses? Are there any special assumptions/violations that I should be concerned about, or is this a pretty safe statistical exercise?
I've taken many statistics courses throughout my life, but it's been many years and I am rusty, so any guidance is much appreciated. Thank you!