History 661: Bivariate Procedures and Tests

 

Variable #1 Variable #2 Problem Procedure Statistical Test Graph
Nominal or Ordinal Nominal or Ordinal Is there a relationship between two variables? Crosstabs Chi-Square Clustered Bar Chart
Scale or Ordinal Dichotomy Is there a significant difference between the means of two groups? T-Test T-Test Simple Error Bar
Scale or Ordinal Nominal or Ordinal Is there a significant difference among the means of several groups? Anova Anova Simple Error Bar
Scale Scale Is there a significant relation-ship between two variables and what is the nature of that relationship? Correlation Pearson Scatterplot
Ordinal Ordinal Is there a significant relation-ship between two variables and what is the nature of that relationship? Correlation Kendall’s tau-b Scatterplot