Lưu ý: Bạn có thể sử dụng MMB vào chảo tiêu đề của cửa sổ 3D qua lại để tìm thấy các nútDi chuyển đến frame 11 với mũi tên Up. Trong khung 11, click "Dán lộn gây ra" nút. Điều này Flipping tư thế | CHAPTER 1 VARIATION OR WHAT STATISTICS IS ALL ABOUT 11 FIGURE Selecting charts and plots from the DDXL menu. FIGURE Selecting the type of graph desired. 12 STATISTICS THROUGH RESAMPLING METHODS AND MICROSOFT OFFICE EXCEL Count 23 Mean Median st. Dev Variance Range Min 137 Max IQR 25thS 75th Height FIGURE Dotplot of the classroom height data. out their tape measures a second time and rule off the distance from the fingertips of the left hand to the fingertips of the right while the student they were measuring stood with arms outstretched like a big bird. After the assistant principal had come and gone something about how the class was a little noisy and though we were obviously having a good time could we just be a little quieter they recorded their results in the form of a two-dimensional scatter plot. They had to reenter their height data it had been sorted remember and then enter their arm span data Height 141 162 159 157 154 158 140 142 150 161 153 145 147 155 137 Arm span 141 162 159 158 160 140 148 139 160 142 164 157 This is trickier than it looks because unless the data are entered in exactly the same order by student in each data set the results are meaningless. We told you that 90 of the problems are in collecting the data and CHAPTER 1 VARIATION OR WHAT STATISTICS IS ALL ABOUT 13 Arm Span FIGURE Scatterplot using excel s default settings. entering it in the computer for analysis. In another text of mine A Manager s Guide to The Design and Conduct of Clinical Trials I recommend eliminating paper forms completely and entering all data directly into the computer. Once the two data sets have been read in creating a scatterplot is easy. Well almost easy. The first chart Fig. I created with the Excel Chart menu next to the question mark selecting
