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Topic: What is 3-sigma ??
Replies: 1   Last Post: Jun 25, 1996 7:28 PM

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Pat Toole

Posts: 1
Registered: 12/18/04
What is 3-sigma ??
Posted: Jun 19, 1996 12:38 AM
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I have been developing an inertial sensor which senses rotation. One
performance requirment is for bias stability of 0.03 deg/hr 3-sigma. If the
distribution of bias measurements were normal or gausian, then the formula
would be simple.

3-sigma = 3 * 1-sigma = 3 * (variance) ^1/2

Unfortunately, the bias measurements look like a sin function with random
noise. So, if the distribution is not normal, how do I calculate 3-sigma???


Thanks for your help




Date Subject Author
6/19/96
Read What is 3-sigma ??
Pat Toole
6/25/96
Read Re: What is 3-sigma ??
John Duffy

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