Nonparametric Correlation Estimates

The Spearman's rho and Kendall's tau-b statistics measure the rank-order association between two scale or ordinal variables. They work regardless of the distributions of the variables.

  1. To obtain an analysis using Spearman's rho, recall the Bivariate Correlations dialog box.
  2. Select Sales in thousands as an analysis variable.
  3. Deselect Pearson and select Spearman.
  4. Click OK.
Figure 1. Bivariate Correlations dialog box
The Bivariate Correlations main dialog box. Fuel efficiency and Log-transformed sales are selected for analysis. The Spearman measure of correlation is selected.

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