This Problem Set is a part of the Lesson 19, Unit 6, Grade 6. Before students begin the Problem Set, consider allowing time for them to work on their projects. If students have not collected data, then provide assistance in completing that process. If students have collected data, then provide them time to create numerical or graphical summaries of the data (dot plots, box plots, or histograms). Assign only one or two of the problems in the Problem Set if the time is needed for completion of the project.