Curious guy

Of course. I don't know why I didn't think about that. Thanks Igotnothin!

Hello Everyone So, I've come up the following problem - I have this data set with two variables - one is the age of a participant and the other one is a dichotomous variable that has to do with behavior. I want to know if the age affects the behaviour. Can I perform a t test, in which the age is the dependent variable? Obviously in theroy the age can only be the independent variable. If I perform the test the way I described it and find a significant difference (which I have), can I conclude that age affects behaviour, even though age was the dependent variable? Thanks!

Thanks to both of you!

I only have one SD for each participant. Not the actual data points which were used to calculate the SD.

Hi Ellies and kgbfan. Thanks for your replies! Ellies - Yes, that's exactly my question. Is it correct to use anova to compare means of SD's? It sounds logical to me, but I'm worried I might be overlooking something. kgbfan - I have over 20 SD's to compare. Are you sure Levene's test is a possible solution?

Hello Everyone I've encountered the following problem - I have this test that was administrated to a sample of participants, in a 2X2 design (both within and between participants). Each test generated a mean and standard deviation for each participant. Now, I want to check if there is a statistical difference in the standard deviation of the test (the value that was generated for each participant), both between and within groups. Can I use Anova in this case? Or should I use another test? Thanks a lot!