interval.dist: Compute the squared difference between two scores.
Description
Compute the squared difference between two scores.
Usage
interval.dist(x, y)
Value
\((x-y)^2\), or 0 if x or y is NA.
Arguments
x
a score.
y
a score.
Details
This function computes the squared difference between two scores. This may be an appropriate distance function for the interval level of measurement. NA's are handled gracefully.