Half of D800 have issues???

Started Jun 16, 2012 | Discussions thread
Hughesnet
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Re: Half of D800 have issues???
In reply to SkyDreamer, Jun 18, 2012

SkyDreamer wrote:

The concept of statistical significance, or confidence in the Fisher's analysis, is a bit more sophisticated. Even for a small sample the Ki-squared formula tells us that it is very unlikely that 50% of a sample is defective, if defects on the whole are near to 0. For 0 defects the probability of this occurrence is in fact 0.

So from a purely statistical point of view, 6 out of 12 means that probably a lot of cameras have issues, and Thomas is right.

Cheers!

Unless all his cameras, or many of them, where from the same line or run. Then it isn't near as meaningful as you would like it to be.

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