Statistical Tests

• conditions for unrelated T-test

  - interval (parametric) level of measurement

  - test of difference

  - independent groups desgin
• conditions for related T-test

  - interval (parametric) level of measurement

  - test of difference

  - repeated measures design
• conditions for Pearson R

  - interval (parametric) level of measurement

  - test of relationship
• conditions for Mann-Whitney U

  - ordinal data

  - test of difference

  - independent groups design
• conditions for Wilcoxin

  - ordinal data

  - test of difference

  - repeated measures design
• conditions for Spearman Rho

  - ordinal data

  - test of relationship
• conditions for Chi-Squared Test

  - nominal data

  - test of difference/association

  - independent groups design
• conditions for Sign Test

  - nominal data

  - test of difference

  - repeated measures design