Discriminant analysis - how are circles calculated?

[#1]

Hi,

Does anybody know how the inner and outer circles of a discriminant analysis is calculated?

I use JMP18 and can't find any explanation.

Thanks in advance!

[#2 · Accepted solution]

Hi @WhiteCow2000,

Here's the details from the JMP Help page for the canonical plots.:

- A 95% confidence level ellipse is plotted for each mean. If two groups differ significantly, the confidence ellipses tend not to intersect.

–An ellipse denoting a 50% contour is plotted for each group. This depicts a region in the space of the first two canonical variables that contains approximately 50% of the observations, assuming normality.

Thanks,

Ben