Summary: This module introduces the concepts of mean, variance, and histograms. This work was done as part of the TaTGAP program, a VIGRE PFUG that pairs Rice students with local high school students. VIGRE is a program of Vertically Integrated Grants for Research and Education in the Mathematical Sciences under the direction of the National Science Foundation. A PFUG is a group of Postdocs, Faculty, Undergraduates and Graduate students formed around the study of a common problem.