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LAB4 OUTLIER

1.Open dataset “数据1-RESPONSETIME”. Try to Use bivariate scatter plot to identify the most possible outlier.Show your figure below.

2.Open dataset “数据2-SAT”.Regress “average total score” on other variables and use hii to findout the extreme value in three independent variables (Just show the results ofSPSS).

CASENAME = (    )

Hii= (    )

Regress“average total score” on “average student/teacher ratio”, for this case (thecase name you write above), Hii = (    )

3.Open dataset “数据2-SAT”.Regress “average total score” on “annual salary of teachers” and use studentizeddeleted residual method to check over the “Y29”（South Carolina）.

ModelC: Y=（    ）-（     ）annual_salary

ModelA: Y = (                                  )

PRE= (    )

F*= (    )

4.Cook’s D for case 29（SouthCarolina）(consideringthe three independent variables).

D29= (    )

5.Delete the two outliers (change them into missing variables). Redo the multipleregression and write down your regression equation and the PRE value.

Regressionequation: (                                   )

PRE= (    )

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关键词：Independent Considering regression Variables regressio