Not necessarily. Variance is a powerful force. 100+ samples may sound like a lot, but it's often insufficient. My favorite book on this topic is http://www.s

Not necessarily. Variance is a powerful force. 100+ samples may sound like a lot, but it's often insufficient. My favorite book on this topic is http://www.statisticsdonewrong.com/index.html http://www.statisticsdonewrong.com/index.html, in particular the sections on statistical power.