Hi, I have a problem with finding the above statement.
For example, i have four sets of data where each consists of thirteen different variables. How do i find the most contributing variables out of the thirteen?

23.24 13.22 22.40 12.26 13.24 9.02 15.44 17.61 11.66 29.78 2.66 0.20 1.57
0.11 0.33 0.08 0.73 1.53 0.11 1.25 17.22 0.33 -0.21 0.13 -0.41 0.02
0.85 -5.81 -0.01 2.69 6.03 0.48 2.81 0.24 0.26 0.16 0.88 -0.51 0.09
2.51 11.81 0.03 9.28 -0.01 0.54 0.07 2.28 5.40 0.12 7.09 5.22 0.07

each set of the 13variables represents 1 different item. I'm hoping for another analysis method besides PCA. Thanks in advance.