Question

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7. Table 2.1 presents four sets of data prepared by the statistician Frank Anscombe to illustrate the dangers of calculating without first plotting the data. Data Set A 11 146 12 10 8 13 8.04 6.95 7.58 8.81 8.33 9.96 7.24 4.26 10.84 4.82 5.68 Data SetB 10 8 13 11 146 12 9.14 8.14 8.74 8.77 9.26 8.10 6.133.109.13 7.26 4.74 ata Set C 10 8 13 911 14 6 12 7.46 6.7712.74 7.117.81 8.84 6.085.398.15 6.425.73 Data Set D 8 19 8 89 12.50 6.58 5.76 7.71 8.848.47 7.04 5.255.56 7.91

Answer 1

ANSWER: All data sets

From the following scatter diagrams we can observe that there is a high positive correlations between two variables. So in all thge data sets there is a dependence of y on x

12 10 8 0.500x + 3.000 R2-0.666 у 0 0 10 15 DATASETR-Bİ 12 10 8 Y0.5x3.000 R? 0.666 4 10 15

15 yi 0.499x+3.002 R-0.666 10 5 0 0 10 15 DATA STE 'D y 0:499x + 3.001 R 0.666 10 5 0 0 10 15 20