http://www.basic-mathematics.com/box-and-whiskers-plot.html
Describing Graphs
http://quizlet.com/20107765/35-the-five-number-summary-and-boxplots-flash-cards/
Graph types: http://quizlet.com/5025298/graph-types-flash-cards/
MAD
http://www.mathsisfun.com/data/mean-deviation.html
Step 1: Calculate mean (sum of all scores/# of scores)
Step 2: Substract mean from score
Step 3: Calculate mean again