Descriptive Difference Relationship
Center Dispersion Graph
Nominal
Mode Chi-square
Bar-chart/
Ordinal Mode/ Pie-chart
Median Chi-square
(advanced: use Spearman’s rho)
Interval Range
Pearson correlation /
Ratio Mean St. Dev./ Histogram t-test
mode, median Regression
Variance
Center Dispersion Graph
Nominal
Mode Chi-square
Bar-chart/
Ordinal Mode/ Pie-chart
Median Chi-square
(advanced: use Spearman’s rho)
Interval Range
Pearson correlation /
Ratio Mean St. Dev./ Histogram t-test
mode, median Regression
Variance