Statistical Limits Calculator

Standard Deviation (s):

Degrees of Freedom for s:

Average (Mean):

Number of Replicates for the Average (N):


Confidence:
90% 95% 99%

Please enter the standard deviation, the associated degrees of freedom, the average, and the number of replicates for your average.

You can receive the Sample Size Calculator, a small program that calculates sample size for Confidence limits, t-Tests, Cpk and Percentages, the minimum number of trials for a designed experiment, and sample size with maximum allowable rejects for reliability studies. It also includes help files for everything. Make a donation of $20 or more to St Jude Children's Research Hospital and receive the Sample Size Calculator for free.
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