Hi everyone,

I'm having a problem running my regression analyses. Basically, I have 5

Personality Profiles that I have created using Cluster Analysis. I am

trying to use these personality profiles to predict career success

(extrinsic and intrinsic). I have two measures for each type of success --

I combined the intrinsic measure linearly, and I created a 9-box matrix of

categories for Extrinsic Success where there are three groups for each of

the two variables (salary and no. of promotions) so you have Hi:Lo Hi:Avg,

Lo:Hi etc..

First question and problem:

For my Intrinsic composite I entered my 7 control variables into a Linear

regression equation - so far so good. I dummy coded the 5 personality

profiles (1=belongs to profile; 0=does not belong to profile). I then

entered the 5 dummy coded variables into the regression, and it keeps

leaving one of my personality profiles out of the equation due to the

Tolerance Statistic. How do I get around this? Is it possible? Am I

better off NOT dummy coding my personality profile grouping variable and

entering that into the equation and then using some other method to

determine which of the 5 personality profiles is the significant predictor?

Second question and problem:

For my extrinsic variable -- its a categorical variable as described above

(i actually have the data cut different ways -- 9-box grid, and 4-box grid

(only Hi and Lo categories for each variable). Interested group being those

that are high on both variables -- High Salary and High No. of Promotions.

So, I'm looking at a Multinomial Logistic Regression in this case. How do

deal with control variables here? I entered them into the regression and it

said it couldn't run it because several cells were empty. How do I get

around this?

In addtion, when i only enter the personality profiles variables, the

parameter estimates only show for cells 1-8 and not for cell 9 which is my

High:High group that I'm interested in. I'm new to Logistic Regression and

I've read up on interpreting the Output, but I guess I'm still a little

confused. Any help is greatly appreciated.

Thanks!

Claudia