Chapter 11 Activity Anscombe S Quartet Revisited Statistician Francis Anscombe Developed 4 Data Sets That Demonstrate 1 (46.17 KiB) Viewed 35 times
Chapter 11 Activity Anscombe S Quartet Revisited Statistician Francis Anscombe Developed 4 Data Sets That Demonstrate 2 (41.87 KiB) Viewed 35 times
Chapter 11 Activity - Anscombe's Quartet Revisited Statistician Francis Anscombe developed 4 data sets that demonstrate the importance of graphing data In addition to computing the correlation and least-squares line. Verify that the correlations and least- squares lines are the same for each, to 2 decimal places. Construct scatterplots for each (be sure to label the plots). Discuss the differences among the data sets, which are not detected by the correlation or least-squares regression line. For which data sets should r be used? If it is not appropriate, explain why not. Data Set 1 Data Set 4 10.0 01 od y 8.04 8.0 6.95 13.0 7.58 9.0 8.81 11.0 8.33 14.0 9.96 6.0 7.24 4.26 12.0 10.84 7.0 4.82 5.0 5.68 Data Set 2 Data Set 3 r y X 10.0 9.14 10.0 7.46 8.0 8.14 8.0 6.77 13.0 8.74 13.0 12.74 9.0 8.77 9.0 7.11 11.0 9.26 11.0 7.81 14.0 8.10 14.0 8.84 6.0 6.13 6.0 6.08 4.0 3.10 4.0 5.39 12.0 9.13 12.0 8.15 7.0 7.26 7.0 6.42 5.0 4.74 5.0 5.73 8.0 6.58 8.0 5.76 8.0 7.71 8.0 8.84 8.0 8.47 8.0 7.04 8.0 5.25 19.0 12.50 8.0 5.56 8.0 7.91 8.0 6.89 4.0 sila Correlation Coefficient Equation #2 #3 #4
1 11 19 6 9 0 2 7 19 19 4 11 12 1 1 Discuss:
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