Talk:Tolerance interval

Math?

There's no mathematical definition of the tolerance interval here. The article even goes on to give the formulas for the prediction interval and confidence interval. Bukzor (talk) 07:38, 19 February 2013 (UTC)

• @Bukzor: indeed, it's in an unfortunate state; an empty section on Formulas and a full Further reading section have been included for those willing and able to lend a hand. Fgnievinski (talk) 01:06, 11 May 2015 (UTC)

ISO

Evaluation of measurement data – Guide to the expression of uncertainty in measurement JCGM 100:2008 (GUM 1995 with minor corrections) from BIPM states on page 44:

"statistical coverage interval: [...]

NOTE 2 Also called “statistical tolerance interval”. This term should not be used because it may cause confusion with “tolerance interval” which is defined in ISO 3534-2:1993.

[ISO 3534-1:1993, definition 2.61]"

What are the accepted definitions of “tolerance interval” and “statistical tolerance interval”?

—DIV (138.194.12.32 (talk) 07:51, 12 March 2011 (UTC))

Perhaps answered by this statement:

Not related to engineering tolerances

Statistical tolerance intervals have a probabilistic interpretation. Engineering tolerances are specified outer limits of acceptability which are usually prescribed by a design engineer and do not necessarily reflect a characteristic of the actual measurements.

from NIST

—DIV (138.194.12.32 (talk) 08:01, 12 March 2011 (UTC))