SamplePower® 2.0

Use SamplePower to Easily Determine the Sample Size You Need

Only available for Windows.

Get accurate sample sizes every time using SamplePower. SamplePower arrives at a defensible sample size for a variety of common data analysis situations. With SamplePower, you strike the right balance among confidence level, statistical power, effect size and sample size.

Use SamplePower before you collect data. You can easily determine the sample size you need to have a reasonable chance of rejecting the null hypothesis in favor of your research hypothesis. After all, with a sample size that's too small, you could miss out on important research findings. On the other hand, a sample size that's too large wastes time and money.

System Requirements

• Windows 95, 98, 2000 or Windows NT 4.0
• 10MB drive space
• 16MB RAM
• SVGA monitor
• Pentium-class processor