I need to test for equal variance. I tried to read up and it mentioned there are a few tests I can use to test for equality of variance such as F Test (F ratio?), Levene Test, Bartlett Test etc.
I was wondering if there is a qualitative method of telling whether there is equal variance by using the SD and the mean of the two data sets (both normally distributed) My lecturer was saying I can assume equal variance by just looking the mean and the SD?
I do not know how to tell... can anyone help?