the process of correcting multicollinearity
however, most (if not all) remedies may be
worse than the disease. Taking a clue from
the Goldberger’s (1964) parody, Achen
(1982) and Blanchard (1967), they observed
that small sample size (micronumerosity)
and lack of variability in the explanatory
variables may cause problems that look like
multicollinearity, and Blanchard recommended
that we do nothing.