Dot Plots

http://stattrek.com/statistics/charts/dot-plot.aspx?Tutorial=AP

https://learnzillion.com/lesson_plans/7751-describe-the-shape-of-a-dot-plot

http://www.ck12.org/user:ZWFkYW1zQGNhcmx0b24uazEyLm1uLnVz/book/ISD-93-Carlton-High-School-Probability-and-Statistics/section/5.3/

http://math.kendallhunt.com/documents/da1/CondensedLessonPlans/DA_CLP_01.pdf

http://mathbitsnotebook.com/Algebra1/StatisticsData/STShapes.html