Precision computations always include the propagation of the covariance matrix of constraints on to the estimated parameters. A full inverse matrix can be made available on request. Precision ouput is in the form of S-basis dependent standard deviations. The B-method of testing is applied, in order to allow comparison of tests of different dimensions. The software applies only F tests and w tests.
Every constraint is tested individually for significance.
When it introduces too much model distortion, it is rejected. Only conventional alternative hypotheses are currently applied for the testing of observations. During testing and reliability procedures for all alternative hypotheses, constraints are modelled as if they were observations, because a small error in a constraint would cause too much distortion in the testing results of many of the observations otherwise. Per observation group, a histogram of the w test-statistics can be generated on request. These measures are computed for all observations.