Instructions

This calculator estimates the prediction limits for your data. These are used to test if a model is predicting well.

Standard Deviation can either be the Standard Deviation for several repeated runs or a pooled Standard Deviation or "Pure Error" from a designed experiment.

Degrees of Freedom is N-1 for repeated runs. If you are using Pure Error, look up the degrees of freedom your software reports.

Standard Deviation (s):

Degrees of Freedom for s:

Average (Mean):

Confidence:
90% 95% 99%

Please enter the standard deviation, the associated degrees of freedom, and the average.