Question

Why is it important in a report to explain how you dealt with an outlier?

Answer 1

It is important in a report to explain how we dealt with an outlier: Trim them out or some other way? How do we detect the presence of outlier and how extreme they are? This is important when we are optimizing our site for revenue, in which case we should care about outliers.

It is important to report our approach in outlier because th outliers can be of various categories: (i) Outliers can contain valuable information, or (ii) the outliers can be meaningless aberrations caused by measurement and recording errors or (iii) outliers can cause problems with repeatable test results.

Thus, it is important to give feedback to researcher about outlier so that he can take appropriate action according to the category of outlier andmake decision on:Why the outliers are occurring, where, and what may the meaning be.