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  Introduction What is statistics Terms connected to data Measurement levels Significance SPSS basics
• One variable
  Introduction a binary variable a nominal variable an ordinal variable a scale variable
• Two variables - unpaired
  Introduction binary vs binary binary vs ordinal binary vs scale nominal vs nominal nominal vs ordinal nominal vs scale ordinal vs ordinal ordinal vs scale scale vs scale
• Two variables - paired
  Introduction two nominal two ordinal two scale
• 3+ variables - paired
  Introduction 3+ binary 3+ ordinal 3+ scale
• Distributions
  Introduction Binomial Bivariate Normal Chi-Square (Standard) Normal Student t Wilcoxon (Signed Rank)
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Analysing two unpaired variables

Introduction

If you are interested to know if two variables have some form of relation (or association) with each other, or if one might have an effect on the other, you can perform various tests that are explained in this section. If however you are interested in change (difference) then an unpaired test might be more suitable.

With three measurement levels, we can create six different ways to have two variables

1) Two nominal variables
2) A nominal and an ordinal variable
3) A nominal and a scale variable
4) Two ordinal variables
5) An ordinal and a scale variable
6) Two scale variables

For each of the possible combinations a separate section was created. Click on the link to the left of the combination you want to investigate.

Two variables - unpaired

Introduction

Nominal vs. Nominal

Nominal vs. Ordinal

Nominal vs. Scale

Ordinal vs. Ordinal

Ordinal vs. Scale

Scale vs. Scale

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