Is it correct to interpret the sign of statistically non-signifcant coefficient?
Dear Members
This question turns to be somewhat foolish or trivial for many in this forum, but I think a clear cut answer if it all possible by members in this forum can uproot the doubt in my mind.
Question 1: Can we interpret the "SIGN" of an non-significant coefficient?
Asnwer1: "
"If a coefficient's t-statistic is not significant, don't interpret it at all. You can't be sure that the value of the corresponding parameter in the underlying regression model isn't really zero."
DeVeaux, Velleman, and Bock (2012), Stats: Data and Models, 3rd edition, Addison-Wesley
p. 801 (in Chapter 10: Multiple Regression, under the heading "What Can Go Wrong?")
Source:https://web.ma.utexas.edu/users/mks/...ioncoeffs.html
Answer2: Some authors interpret the sign at least, stating that the nature of the relationship is -ve (or +ve) but not statistically significant.
Which one of the above is more correct? Faced with an insignificant coefficient should we ignore them completely and move forward or should we stop and interpret the sign?
I have read a similar post on this forum but couldn't find the answer for my doubt
https://www.statalist.org/forums/for...t-coefficients
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