Hi there, I'm new to the forum. I'm off to uni in September to study Maths and am trying to do a bit of work on my weakest area, Statistics. I am struggling to see how you know which test is appropriate to which situation.

I have a table containing 30 students coursework marks, overall marks and their sexes, and am trying to answer the following question:

Select the correct test for each situation:

- a test to see if the male and female overall marks have equal variances.

a test to see if the mean overall mark is different formales and females.

a test to see if there is a significant difference between the proportions of males and females that pass.- a test to see whether the second coursework mark is on average higher than the first.

Probably very basic for someone on here, but I just don't understand how you know what test to use in each case. Any advice would be much appreciated.

Thanks in advance!