The PDF linked below challenges students to demonstrate understanding of statistical methods used to display, analyze, compare, and interpret different data sets. A student must understand how to construct the most appropriate graph, including frequency distribution, stem and leaf, and scatter plot, for a given set of data and justify the choice. A student must analyze data, including finding measures of center and spread presented in a frequency distribution. A student must make sense of the data representation by being able to find, use and interpret measures of center and spread, including interquartile range. In this case, a student must make sense of the constraints of the problem situation in order to make a mathematical argument and justification for the selection of a particular.