The Spearman r does for ordinal data what the Pearson r does for interval data.

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The Spearman r is a measure of correlation that is used to assess the degree of association between two variables, both of which are measured on an ordinal scale. It is a nonparametric measure of correlation, which means that it does not require any assumptions about the distribution of the variables being examined, and it is often used when the relationship between the variables is not linear or the data is heavily skewed. The Pearson r, on the other hand, is used to measure the strength and direction of the linear relationship between two variables that are measured on an interval or ratio scale.

The Spearman R Does for Ordinal Data What the Pearson