Chapter 13 Data Sets Case Study   Exercises 13.20 13.21 13.22 13.23 13.24 13.25 13.26 13.27 13.28 13.29 13.30 13.31 13.32 13.33 13.34 13.35 13.44 13.45 13.46 13.47 13.48 13.49 13.50 13.51 13.52 13.53 13.54 13.55 13.56 13.57 13.58 13.59 13.60 13.61 13.71 13.72 13.73a 13.73b 13.74 13.75 13.76 13.77 13.78a 13.78b 13.78c 13.79a 13.79b 13.79c 13.79d 13.79e 13.79f 13.89 13.90 13.91 13.92 13.93 13.94   Review Problems 11 12 13 14 15 16 17 19 20   Tables 13.1&13.2 13.5&13.6 13.7 13.9 13.11 13.12 13.13 13.15 13.17