Inferential Statistics

Mann-Whitney

• At least ordinal data
• Test of difference
• Independent groups
• The observed value is significant if it is equal to or less than the critical value

Wilcoxon

• At least ordinal data
• Test of difference
• Repeated measures
• The observed value is significant if it is equal to or less than the critical value

Chi-Square

• Nominal Data
• Association
• The observed value must be equal to or more than the critical value

Spearman's Rho

• At least ordinal data
• Relationship (correlation)
• The observed value must be equal to or more than critical value