Multicollinearity exists when: a.the dependent variable and an independent variable are highly correlated. b.when two or more in
1 answer:
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The answer is C
The absolute value of a number is simply the positive version of that number. So, if a number is already positive the absolute value does nothing, else it switches its sign.
This is easier done than said: we have and
. And since
, C is correct. Let's see why the others are wrong:
Option A translates to
Option B translates to
Option D translates to