Silliest IT buzzword ever - "the Cloud"

[expat]

One Sigma = 690,000 DPMO* = 31% efficiency
Two Sigma = 308,000 DPMO = 69.2% efficiency
Three Sigma = 66,800 DPMO = 93.32% efficiency
Four Sigma = 6,210 DPMO = 99.379% efficiency
Five Sigma = 230 DPMO = 99.977% efficiency
Six Sigma = 3.4 DPMO = 99.9997% efficiency

*Defective Parts per Million Opportunities

http://en.wikipedia.org/wiki/Six_Sigma

In pure stats, that's not right: +- sigma on a normal distribution includes about 68% so is about 68% efficiency, or 32% "defective". ISTR that 2 sigma covers about 95% and 3 sigma very roughly 99.5%.

But I see from wikipedia that "an empirically-based 1.5 sigma shift is introduced into the calculation". Aye, right.

[Xenophon]

But I see from wikipedia that "an empirically-based 1.5 sigma shift is introduced into the calculation". Aye, right.

Yeah, those numbers are due to the somewhat contentious 1.5 sigma shift.

[NotAllThere]

Every cloud has a silver lining - so it's a way of making money, you see.

[Diestl]

It's all bulltulip... the lot of it.

[Mich the Tester]

It's all bulltulip... the lot of it.

WHS