mu: Function to calculate Guttman's monotonicity coefficient (mu)...
In CambridgeAssessmentResearch/POSAC: Partial order scalogram analysis

Description Usage Arguments Value Examples

The coefficient expresses the extent to which values on one variable increase in a particular direction along with the values on another variable without assuming that the increase is exactly according to a straight line.

mu(x, y)

`x`	First vector
`y`	Second vector

a number between -1 and +1

x1=rnorm(1000)
x2=x1^3+rnorm(1000)
#Compare three coefficients of association and plot association
cor(x1,x2)
cor(x1,x2,method="spearman")
mu(x1,x2)
plot(x1,x2)