Perform Spearman rank correlation test¶

Source: man/performSpearmanTest.Rd · Help: ?performSpearmanTest

Computes Spearman's rho between absolute residuals and fitted values.

Usage¶

performSpearmanTest(model, data = NULL)

model: an object of class lm.
data: optional data frame the model was fitted to. When NULL, the default, the model frame of model is used. The statistic is computed from the residuals and fitted values of model, so data does not change the result; it is accepted so that every test takes (model, data, ...).

An object of class htest containing the test statistic, p-value, degrees of freedom and rho.

The squared rank correlation coefficient times the sample size minus 1 approximates a chi-square distribution with one degree of freedom.

Spearman, C. (1904). The proof and measurement of association between two things. American Journal of Psychology, 15(1), 72–101.

 data(mtcars)
 m <- lm(mpg ~ wt + qsec, data = mtcars)
 performSpearmanTest(m)