the test strength of the scheirer–ray–hare test, "i.e". the probability of actually finding a statistically significant result, is significantly lower than that of the parametric multi-factorial anova, so that it is considered more conservative in comparison of both methods. for this reason, and because the method was described later than most other parametric and non-parametric variance analysis tests, it has found little use in textbooks and statistical analysis software . with computer programs that contain a function for parametric multi-factorial anova, however, with additional manual effort and a calculation of the scheirer ray hare test is possible.