Polychoric Correlation in R
Polychoric Correlation in R
The correlation between ordinal variables is calculated using polychoric correlation.
Remember that ordinal variables are categorical possible values and natural order.
Some of the common scales measured on an ordinal scale mentioned below,
Low, Medium, High
Dislike a Lot, Dislike a Little, Neither Like Nor Dislike, Like a Little, Like it a Lot
Small, Medium, High
Etc…
Polychoric correlation has a value ranging from -1 to 1, where:
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