Chapter-12-Simple-Linear-Regression-商务统计-教学课件.ppt

1、 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide01 ybb x y 9 Slide01 ybb x 10 Slidemin(yyii)2 11 Slide12()()()iiixxyybxx 12 Slide01byb x 13 Slide 14 Slide 15 Slide105yx12()()205()4iiixxyybxx01205(2)10byb x 16 Slide y=5x+1005101520253001234TV AdsCars Sold 17 Slide2()iyy2()iyy2()iiyy 1

2、8 Slide 19 Slide 20 Slide21)of(sign rbrxyionDeterminat oft Coefficien)of(sign 1brxyxbby10 21 Slide21)of(sign rbrxy105yx=+.8772xyr 22 Slide 23 Slide 24 Slide2102)()(SSEiiiixbbyyy 25 Slide2SSEMSEns 26 Slide01:0H1:0aH11bbts 27 Slide 28 Slide01:0H1:0aH11bbts 29 Slide1154.631.08bbts 30 Slide 31 Slide11/2

3、 bbts2/t1/2 bts 32 Slide12/1bstb 33 Slide01:0H1:0aH 34 Slide 35 Slide01:0H1:0aH 36 Slide 37 Slide 38 Slide/ytspyp2/2 indpyts 39 Slide 40 Slide DEFG1CONFIDENCE INTERVAL2xp33xbar2.04xp-xbar1.05(xp-xbar)21.06(xp-xbar)24.07Variance of yhat2.10008Std.Dev of yhat1.44919t Value3.182410Margin of Error4.6118

4、11Point Estimate 25.012Lower Limit 20.3913Upper Limit 29.61 41 Slide 42 Slide HI1PREDICTION INTERVAL2Variance of yind6.766673Std.Dev.of yind2.601284Margin of Error8.278455Lower Limit 16.726Upper Limit 33.287 43 Slide 44 Slideiiyy 45 Slide 46 Slideyy 47 Slideyy 48 Slideyy 49 SlideObservationPredicted Cars SoldResiduals115-1225-1320-241525252 50 SlideTV Ads Residual Plot-3-2-1012301234TV AdsResiduals 51 Slide