Parametric / Non Parametric Tests

Question 1

Non parametric tests, with nominal data what should you use

Answer 1

Sign test, Chi-Squared

Question 2

Non parametric tests, with ordinal data what should you use

Answer 2

Wilcoxon, Mann-Whitney U, Spearman’s Rho

Question 3

3 criteria for using a parametric test

Answer 3

Normally distributed data
At least interval data
Variances/standard deviation