ordinalcorr 0.2.0

A Python package for correlation analysis between ordinal variables

ordinalcorr: correlation coefficients for ordinal variables

A Python package for computing correlation coefficients designed for ordinal-scale data (e.g., Likert items). Supports polychoric correlation and other ordinal association measures.

📦 Installation

pip install ordinalcorr

📘 Features

Polychoric correlation

Compute correlation coefficient between two ordinal variables

from ordinalcorr import polychoric_corr

x = [1, 1, 2, 2, 3, 3]
y = [0, 0, 0, 1, 1, 1]

rho = polychoric_corr(x, y)
print(f"Polychoric correlation: {rho:.3f}")

Polyserial correlation

Compute correlation coefficient between continuous variable and ordinal variable

from ordinalcorr import polyserial_corr

x = [0.1, 0.1, 0.2, 0.2, 0.3, 0.3]
y = [0, 0, 0, 1, 1, 2]

rho = polyserial_corr(x, y)
print(f"Polyserial correlation: {rho:.3f}")