- Thread starter krisfire
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I don't remember the output for a Discriminant Analysis in SYSTAT, but I'd like to think that they include this coefficients (MINITAB does not and I don't understand why:shakehead). Still, if you are working with only two groups you could obtain the coefficients, but with more than two groups it will be a little harder.

Hope that helps

If you wouldn't mind a follow-up question...?

I have a strange situation that I am unable to understand regarding the structure matrix output. All of my 20 variables are most highly correlated with the 3rd function - all of the functions are significant, but the third is responsible for only perhaps 10% of the variance. In addition, the "loadings" are all fairly similar on each function (ie. all variables have a loading of .01 to.06 on function 1, .1 to .25 on function 2, .29 to .39 on function 3, .01 to .05 on function 4 etc).

I am not clear on what this means in terms of which variables are "driving" the analysis, as every other DFA I've ever seen resulted in the loadings spread more widely on each function and the highest correlations spread across across the functions.

Does this result make any sense to you?

Now, regarding your results, well, there are many reasons why you might not see much difference in your coefficients. First, make sure you are analyzing the standardized coefficients, which are more informative (specially if you have different scales). Try also looking at the classification table. Is your model good for classifying? Is it better than random? Look for the

Finally, make sure your models met the assumptions of linear discriminant analysis, such as multivariate normality and equal covariance matrix among groups. Besides It seems you have many groups, so you would need a good sample size to provide power to the analysis and the discriminant analysis can be sensitive to big differences in sample sizes for groups.

I hope that's not too confusing Good luck

Dear all

I think all of you can use and understand well on the Discriminant of SYSTAT.

Now in Vietnam, I am trying to use the Discriminant model to predict climate (Monthly temperature) for Vietnam. So I don't understand well about this model.

Could you please tell me step by step to do this?

Could you please reply to me by the email mau.imhen@gmail.com

Best regards and hope to hear good information from you soon

Mau