Set Statistics

The calculation of mean vectors for Sets can be associated with:

• Confidence or Variability cone angles
• Fisher dispersion constants

Confidence Limit

This angular value reflects confidence in the MEAN within a specified degree of certainty. For example, a 68% confidence cone indicates that the true mean lies within the cone angle of the calculated mean, with a 68% confidence. This feature gives an indication of the reliability of the sample, or if the sample is big enough.

Variability Limit

This value reflects the natural variability of the data, assuming that the mean is correct. A 68% variability indicates that any pole, selected from the population represented by the mapped sample, has a 68% probability of falling within the variability cone. This feature can be used for probabilistic stability studies.

Fisher Dispersion Coefficient

A Fisher Dispersion Coefficient "K" is automatically calculated for each Set. A larger "K" indicates a tighter cluster.