I am teaching my students Multiple linear regression.I loaded a dataset and fit multiple regression to it using SPSS. I got non-significant regression coefficients with some negative and positive values. Now a student asked me how can one manipulate the variable(s) corresponding to the specific non significant regression coefficient so that we have significant result?

My Intuition

Significant regression coefficient means that by changing value of that variable and keeping the rest constant it show it has significant effect on the output variable.But I do not know how that variable manipulation can change significance of the corresponding regression coefficient?

  • 1
    $\begingroup$ You're asking how to do significance-hunting (data dredging)? $\endgroup$
    – Glen_b
    Apr 10 '16 at 11:32
  • $\begingroup$ @Glen_b yes please tell me if you have any suggestion here....do u have some magic say as to how to manipulate those variables so to get significant regression coefficients?................ $\endgroup$
    – Naseer
    Apr 10 '16 at 11:42

You can divide the explanatory variable by its non-significant coefficient to get a perfect fit.


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