Large Data Sets from Appendix B. In Exercises 25-28, refer to the indicated data set in Appendix B. Use software or a calculator to find the means and medians.

1. [Data Set] Weights Use the weights of the males listed in Data Set 2 "ANSUR I 1988," which were measured in 1988 and use the weights of the males listed in Data Set 3
   "ANSUR II 2012," which were measured in 2012. Does it appear that males have become heavier?