Turn imported column data into matrices

I am very new to Matlab. I have imported a file called "q3_data.mat". How do I turn this into matrices? I need the first row to be my vector of outcome variables and the remaining three rows into my independent variables. I would like to turn each one into vectors as two of them are dummy variables. How do I do this?

Answer 1

[Jan]

Data      = load('q3_data.mat');
Outcome   = Data.X(1, :);
Variables = Data.X(2:end, :);

Here I guess, that the data are stored in the matrix X. But this depends on the contents of the file, which I do not know.

What does "turn each one into vectors as two of them are dummy variables" mean? What is "each one" and why does "turning into vectors" help to cope with "dummy variables"?