Minimal Trials Calculator

Number of Factors:


Model:
Interaction Full Quadratic Full Cubic

Please enter the number of factors to study and the model to fit.

It's best to add at least 3 extra trials in a real experiment.

You should also add at least 5 replicates to your design.

Count on running at least 8 runs more than the minimum using an I-Optimal Design.

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.
Tell me more!