Saturday, December 8, 2007

The WSJ "numbers" guy

The Wall Street Journal (WSJ) has a "numbers" guy that just posted an article on how numbers can be very misleading.

He makes a good point, despite coming close to arguing himself out of a job :).

The good point is that the term 'statistical significance' has taken on such a aura in popular culture and business that anything claiming 'significance' from data must be true and important.

It's generally not - on either account. Large sets of data can produce all sorts of strange results and small sets all sorts of wrong conclusions.

Just something to keep in mind.

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