What is the first question you ask yourself when deciding on a statistical test?
Does the research hypothesis predict a difference or a correlation?
What experimental design was used?
What is the second question you ask yourself when deciding on an appropriate statistical test?
If a difference is predicted-what experimental design was used?
Parametric or non-parametric test?
What is the third question you ask yourself when deciding on an appropriate statistical test?
Can I used a parametric test or must I use a non-parametric test?
What level of data must I use?