I was doing pretty bad in Methods 3/4 last year.
To give you perspective, my cohort was of low average - high average strength (with a few ace students). Had approx 50 students.
However, the sacs were quite questionable - the 1st and 2nd wasn't really exam style and was heavily (I emphasise this word) based on mathematical application. They were of average - a bit above average difficulty.
1st sac: 52% (26/50) , cohort median was 29/50, I think I was slightly above quartile one on the box plot
2nd sac: 36% (9/25), cohort median was 15/25, I was exactly on quartile one
3rd sac: 52% (13/25), can't remember cohort median, I think I was slightly above quartile one
Don't know what my ranking was, but apparently it was rumored to be in the mid 30's - high 30's.
Practise sacs: Never got higher than 40%, it ranged from low 20's to mid 30's. I'm not kidding, I'm pretty sure I still have a few of my methods practise exams lying around haha
(I didn't order the statements for the exams)
Exam 1: Not too sure if I'm correct, but it should have been 13/40 (33%)
Exam 2: Exactly 35%. I still have the cheat sheet during the methods exam, where I wrote up all my answers on it so I could go back home and check it online to see how many marks I got lol. Don't do this though, spent approx 5 mins on this cause' I already knew I was screwed for that exam anyways
I got a 27 study score. 20 should definitely be achievable.
I hope this eases your mind. I was copping L's the whole year but I always knew that my lowest study score in Methods would be at least 24.
Oh, and I completely neglected the statistics part for exam 2 especially. If you were to see my methods exam, I left a whole page blank not because I ran out of time, but because I didn't know what to do.