This survey is being administered to elementary, middle school, high school, and university students, almost 1000 surveys in all. I'm hoping to eventually survey around 2000 students, as those numbers will be safely generalizable to the entire student population of South Korea.

My research questions are:

What are the major reasons students are reluctant to speak English?

Do these reasons vary by age? Gender? School level? Or a combination of these?

Now, the problem is that my last graduate level stats class was 9 years ago. I still remember the basic concepts and measures of central tendency, but then I start to get fuzzy.

If I remember right, in order to determine if variance by any of the demographic features is statistically significant, I should run dependent T-tests with everyone of a single variable compared to everyone of another. For example, on each test item, all boys compared to the whole sample and all girls compared to the whole sample. I can also do combinations, right? All middle school boys to all middle schoolers, and all middle school girls to all middle schoolers.

What other kinds of tests am I going to want to run in order to get interesting descriptive statistics?