# What statistical test to use for my questionnaire

I have to do some statistical tests on a questionnaire and don't know which tests i need to do. The questionnaire have been marked as right or wrong and I have about 60 peoples results. The tests i need include;

1. If different types of people have better knowledge (these are split into two groups, i.e. younger and older).

2. Whether peoples knowledge increased after receiving information on the subject.

The questions are different on the before and after questionnaire and which one was given first has been randomly assigned.

I thought of doing unpaired t test for 1, a paired t test for 2, but for this type of data do i need to do a normality test? Should i even be doing parametric tests? I think these should be two tailed, but it would probably be assumed that if you give people information on a subject their knowledge would improve?

Thank you for any help.

• You say that the questions have been marked as right or wrong, but are there multiple questions? So people have a score, of the number of questions they got right, from 0 to X. What's X? You say which questionnaire was given first was random - was it the same questionnaire? Commented Apr 10, 2013 at 21:27
• Hey, there are two parts to the questionnaire, 50% were given part a first and 50% part B first. Yes people have a score, for every correct answer they get a mark and this is out of 25. Commented Apr 10, 2013 at 21:47