The Sample Size Calculator -- and a Good Deed!

One of the most common questions I have been asked is, "What sample size do I need for ... ." The "for ..." can mean "confidence limits of a certain width,"" or 99% reliability with 95% confidence," or "to run a designed experiment with 5 factors and a full quadratic model." To answer the most common of these "for ..."s I wrote the Sample Size Calculator. You can download a 14 day trial copy from http://www.objectivedoe.com/software/SampleSize.exe Here's a complete list of what it includes: Confidence limits t-Tests Cpk Percentages Minimum experiment trials (DoE) Reliability Tolerance limits If you like it and want to keep using it, you can make a donation of $20 or more to St.Jude Children's Research Hospital at https://shop.stjude.org/GiftCatalog/express-donation.do?fnl=don_sin Forward your e-mail receipt to Hero@ObjectiveDOE.com and you will receive a registration code in a few days. This is a great way to help children suffering from cancer and calculate sample sizes for your work. You may even be able to claim a tax deduction! You can learn more at http://www.objectivedoe.com/software/software.html Take care, Bill Kappele.