Mr. Douglas trains a group of student athletes. He wants to know how they are improving in the number of sit ups they can do. The following dot plots show the number of sit-ups each student was able to do last month and this month. Number of Sit-Ups Last Month Number of Sit-Ups This Month 15 20 25 30 35 40 45 50 15 20 25 30 35 40 45 50 By how much did the mean number of sit-ups increase from last month to this month? 600 Make up two data sets. List all the values in each data set and write a story to describe where they may have originated. The data sets should meet the following conditions: The means should be different. The MADs should be similar. • The means should be more than one MAD apart. Be sure to show work to demonstrate that your data sets meet the above conditions. ​