Chapter 9
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Chapter 9

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    Chapter 9 Chapter 9 Document Transcript

    • SECTION 9.1 Given correlation correlation sample size deg. Freedomα Standard Error Test Statistic CRITICAL SCORE 0.5080 16 14 0.03 0.23 2.21 LEFT -2.145 RIGHT 2.145 TWO -2.510 2.510 x-variable y-variable correlation sample sizedeg. Freedomα Standard Error Test Statistic 8 12.4 0.7533 22 20 0.05 0.15 5.12 4 5 5 6.5 3 13 1 1.69 14 17.56 1 3.75 5 7.77 1 81 13 18.87 6 24.7 6 39.45 7 43.02 1 5.4 3 8.94 2 1.73 2 2.68 5 11.43 19 128.56 1 0.99 7 43.68 8 22.48 1 14.99 41 171.06 5 49.45 7 9.9 8 9.66 4 4.02 5 15.12 1 1.38 2 9.99 16.5 57.83 6 10.9 8 29.85 7 27.38 5 6.5 5 7.35 2 5.48 7 41.78 2 31.84 19 41.95 2 4 11 27.57 3 5.05 5 3.3
    • 1 1.59 1 17 2 20.88 7 12.01 9 29.25 34 71.71 5 17.52 19 24.23 1 6.99 2 19.18
    • TICAL SCORE CRITICAL SCORE LEFT -1.725 RIGHT 1.725 TWO -2.086 2.086
    • x y Slope m Y-int b Regression Linex-value Predict y 0.1 14.9 -1.481 14.790 y=mx+b 18 -11.873 0.2 14.5 3.9 9.013 0.5 13.4 0.6 13.901 0.7 14.1 0.4 14.198 0.8 13.4 0.9 13.7 15.5 15 f(x) = -1.48x + 14.79 14.5 Column B 14 Linear re- gression for 13.5 Column B 13 12.5 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
    • Coefficient of x y Y-Average (y-y^)2 Predicted y x2 y2 xy Determination 15 26 56.500 5.721 28.39 225.0 676.0 390.0 0.940 20 32 Slope 11.689 35.42 400.0 1024.0 640.0 20 38 1.405 6.662 35.42 400.0 1444.0 760.0 Standard Error 30 56 Intercept 42.602 49.47 900.0 3136.0 1680.0 6.22 40 54 7.311 90.764 63.53 1600.0 2916.0 2160.0 45 78 Sample Size 55.442 70.55 2025.0 6084.0 3510.0 50 80 8 5.851 77.58 2500.0 6400.0 4000.0 Degree 60 88 Freedom 13.214 91.64 3600.0 7744.0 5280.0 6 Con. Level 0.9 Critical Score 1.943
    • X-value √ 32 Prediction 52.284 Error 12.842 Left End 39.441 Right End 65.126
    • Data y x1 x2 84 120 18 88 130 17 81 118 25 92 144 8 79 125 19 78 116 20 90 135 10