Sample Median, Quartiles, Etc. Data Basics (RMD) Data Basics (PDF) Sampling Methods (RMD) Sampling Methods (PDF) Mean, Variance, and Standard Deviation (RMD) Mean, Variance, and Standard Deviation (PDF) Median, Quartiles, Etc. (RMD) Median, Quartiles, Etc. (PDF) Quartile Exploration (RMD) Quartile Exploration (PDF) One-Variable Graphs (RMD) One-Variable Graphs (PDF) Two-Variable Graphs (RMD) Two-Variable Graphs (PDF) Descriptive Statistics Sample Mean, Variance, and Standard Devation