This is Dataplot data file YOUDEN31.DAT Paper Thickness Source--Youden, William John (Jack) (1962). Experimentation and Measurement. National Science Teachers Association. Vistas of Science 1201 16th St., NW, Washington, DC Table 2, page 31. Number of observations = 96 Number of variables per line iamge = 3 Order of variables on a line image-- 1. Response Variable = Thickness (in mm) 2. Factor 1 = Measurer/Operator/Girl (1 to 24) 3. Factor 2 = Replication (1 to 4) Statistical Categories--Univariate Distributional Analysis Comparative Control Charts To read this file into Dataplot-- SKIP 25 READ YOUDEN31.DAT Y X Thickness Girl Replication ------------------------------ .0757 1 1 .0762 1 2 .0769 1 3 .0746 1 4 .0808 2 1 .0793 2 2 .0781 2 3 .0821 2 4 .0811 3 1 .0772 3 2 .0770 3 3 .0756 3 4 .0655 4 1 .0683 4 2 .0714 4 3 .0746 4 4 .0741 5 1 .0710 5 2 .0748 5 3 .0711 5 4 .0756 6 1 .0772 6 2 .0776 6 3 .0759 6 4 .0775 7 1 .0785 7 2 .0760 7 3 .0761 7 4 .0747 8 1 .0765 8 2 .0735 8 3 .0776 8 4 .0719 9 1 .0762 9 2 .0802 9 3 .0713 9 4 .0734 10 1 .0833 10 2 .0833 10 3 .0783 10 4 .0755 11 1 .0740 11 2 .0714 11 3 .0743 11 4 .0788 12 1 .0817 12 2 .0794 12 3 .0766 12 4 .0731 13 1 .0716 13 2 .0726 13 3 .0714 13 4 .0833 14 1 .0794 14 2 .0783 14 3 .0788 14 4 .0767 15 1 .0775 15 2 .0765 15 3 .0793 15 4 .0787 16 1 .0798 16 2 .0864 16 3 .0817 16 4 .0784 17 1 .0799 17 2 .0789 17 3 .0802 17 4 .0784 18 1 .0820 18 2 .0796 18 3 .0818 18 4 .0830 19 1 .0796 19 2 .0778 19 3 .0767 19 4 .0741 20 1 .0680 20 2 .0733 20 3 .0723 20 4 .0759 21 1 .0766 21 2 .0772 21 3 .0466 21 4 .0810 22 1 .0812 22 2 .0789 22 3 .0776 22 4 .0777 23 1 .0759 23 2 .0795 23 3 .0790 23 4 .0784 24 1 .0786 24 2 .0797 24 3 .0859 24 4