Statistical Tests: Decision Tree

Statistical Tests: Decision Tree

1. Looking for differences between groups

   • How many independent variables?
     • One
       • How many groups/conditions?
         • Two
           • Is the design within (repeated) or between (independent) participants?
             • Within (repeated)
               • Repeated measures t-test
             • Between (independent)
               • Independent measures t-test
         • More than two
           • Is the design within (repeated) or between (independent) participants?
             • Within (repeated)
               • One-way repeated measures ANOVA
             • Between (independent)
               • One-way independent measures ANOVA
     • More than one
       • Are the IVs within groups (repeated measures), between groups (independent measures) or both?
         • Both
           • Mixed Factorial ANOVA
         • Within (repeated)
           • Repeated measures factorial ANOVA
         • Between (independent)
           • Independent factorial ANOVA

2. Looking for relationships between variables

   • How many variables do you have?
     • Two
       • Do you want to model this relationship, or simply measure its strength?
         • Strength
           • Correlation
         • Model
           • Regression
     • More than two
       • Multiple regression