The previous lesson described the calculation of the mean, SD, and CV and illustrated how these statistics can be used to describe the distribution of measurements expected from a laboratory method. Why are the standard error and the sampling distribution of the mean important?.Standard deviation of means, standard error of the mean.Calculation of the mean of the means of samples (or standard error of the mean).Calculation of the mean of a sample (and related statistical terminology).EdD Assistant ProfessorĬlinical Laboratory Science Program University of Louisville Zady, Ph.D., talks about the means of means and other important statistical calculations. When you compare monthly QC data or perform initial method validation experiments, you do a lot of mean comparison.