Statistics: Sample Size, Variance and Standard Dev
posted by Carma .
Sample Size, Variance and Standard Deviation
A student organization plans to ask 100 randomly selected students how much they spent
on textbooks last semester. You argue for a sample of 900 students instead of 100. You
know the standard deviation of the sample mean x of the amounts spent will differ. How
will the standard deviation of the larger sample compare with that of the smaller sample?