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A comment on Net Promoter Score Considered Harmful. Parent comment

Re:Net Promoter Score Considered Harmful by jmspool on Tuesday December 26, 2017 @01:34PM (#16010061)
> Any self-respecting statistician would know that the mean of a quantity where addition is not well-defined is meaningless.

There goes the Dow Jones average.

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Re:Net Promoter Score Considered Harmful by JumpCrisscross on Tuesday December 26, 2017 @01:47PM (#16010153)
> the Dow Jones average

The Dow Jones was invented in the 1890s to be easy to calculate. It is widely panned and is not used by anyone in industry for anything serious.

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