Good Day, Out of a population of 220 children, I need to randomly select 10 for use in a pilot experiement. The selection of 10 subjects is based on financial reasons, not on any power calculations. My question is, how do I make sure that the subsample of 10 subjects represent my population of 220?
The question seems basic at face value, but I'm just not comfortable with any solutions. It is important that the subsample have similar age, height & weight. Do I just run one t-test for each of the 3 dependent variables? While the sample sizes are unequal, am I correct in saying that unequal sample sizes are "ok" as long as the variances are equal? Any help will be very appreciated! Thank you! Jeremy . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
