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Proc Discrim and interpretation

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Dear All,

I have to analyze a small data set. 6 variables and 20 observation. I clustered 20 observation into 3 groups and I used Proc Discrim and SAS output 3 functions. Below is the output;
Linear Discriminant Function for CLUSTER

PHP Code:

            Variable        Label             1                 2                    3

             Constant                     
-135.43350    -240.07241     -108.59505
                 x1              x1          11.40796        6.74077           6.25519
                 x2              x2          18.17754        27.15047         14.51286
                 x3              x3          8.27477         6.69168           1.46474
                 x4              x4         12.85626        24.54617         14.64702
                 x5              x5          8.03166         12.66484         13.85583
                 x6              x6          8.90164         14.04415         9.92077 

It outputs 3 functions because I have 3 clusters? How do I interpret these coefficients?
Thank you.

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