index of precision

index of precision

[′in‚deks əv prə′sizh·ən]
(statistics)
The constant h in the normal curve y = K exp [-h 2(x-u)2]; a large value of h indicates a high precision, or small standard deviation.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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* d2s is the "difference two-sigma limit," or the difference between two test results that is expected to be exceeded with a probability of about 5 percent in the normal and correct operation of the test method; used as an index of precision the test method.
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