4: Histograms, Normal Distributions, and the Central Limit Theorem

SOLVED: The majority of variables that social scientists study are not normally distributed. This doesn't typically cause problems in analysis when the goal of a study is to calculate means and standard deviations as long as sample sizes are greater than about 50. However, when characterizing the distribution of scores in one sample, or in a complete population (if this information is available), a non-normal distribution can cause complications. We can illustrate this point by examining the dis