Nick Byrd, Ph.D.When people ask me how to estimate the sample size needed for their research question, my answers fall broadly into two buckets: power analysis and precision for planning analysis. But there seem to be other options as well.
What's your preferred method?
Preferred software? (Or software package?)
In research, how do you determine the ideal sample size?
Nick Byrd's answer: There are a few ways to estimate the sample size needed for a hypothesis, both of which require you to find out what kind of results you expect. 1. Power analysis. First, you need to figure out what effect size you expect to find (e.g., by looking at past research about the k...