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ISYE 6414 Final Exam Questions And Answers.
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ISYE 6414 Final Exam Questions And Answers.ISYE 6414 Final Exam Questions And Answers.ISYE 6414 Final Exam Questions And Answers.ISYE 6414 Final Exam Questions And Answers.ISYE 6414 Final Exam Questions And Answers.ISYE 6414 Final Exam Questions And Answers.ISYE 6414 Final Exam Questions And Answer...

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  • September 7, 2024
  • 3
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • isye 6414 final exam questions and answers

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ISYE 6414 Final Exam Questions And
Answers


1. iIf ithere iare ivariables ithat ineed ito ibe iused ito icontrol ithe ibias iselection iin ithe imodel, ithey ishould
iforced ito ibe iin ithe imodel iand inot ibeing ipart iof ithe ivariable iselection iprocess. i- icorrect iAnswers
i✔✔ i-True


2. iPenalization iin ilinear iregression imodels imeans ipenalizing ifor icomplex imodels, ithat iis, imodels
iwith ia ilarge inumber iof ipredictors. i- icorrect iAnswers i✔✔ i-True


3. iElastic inet iregression iuses iboth ipenalties iof ithe iridge iand ilasso iregression iand ihence icombines
ithe ibenefits iof iboth. i- icorrect iAnswers i✔✔ i-True


4. iVariable iselection ican ibe iapplied ito iregression iproblems iwhen ithe inumber iof ipre- idicting
ivariables iis ilarger ithan ithe inumber iof iobservations. i- icorrect iAnswers i✔✔ i-True


5. iThe ilasso iregression iperforms iwell iunder imulticollineariy. i- icorrect iAnswers i✔✔ i-False

6. iThe iselected ivariables iusing ibest isubset iregression iare ithe ibest iones iin iexplaining iand ipredicting
ithe iresponse ivariables. i- icorrect iAnswers i✔✔ i-False


8. iThe ilasso iregression irequires ia inumerical ialgorithm ito iminimize ithe ipenalized isum iof ileast
isquares. i- icorrect iAnswers i✔✔ i-True


9. iAn iunbiased iestimator iof ithe iprediction irisk iis ithe itraining irisk. i- icorrect iAnswers i✔✔ i-False

10. iBackward iand iforward istepwise iregression iwill igenerally iprovide idifferent isets iof iselected
ivariables iwhen ip, ithe inumber iof ipredicting ivariables, iis ilarge. i- icorrect iAnswers i✔✔ i-True


11. iAll iregularized iregression iapproaches ican ibe iused ifor ivariable iselection. i- icorrect iAnswers i✔✔ i-
False

12. iBefore iperforming iregularized iregression, iwe ineed ito istandardize ior irescale ithe ipre- idicting
ivariables. i- icorrect iAnswers i✔✔ i-True


13. iThe ilarger ithe inumber iof ipredicting ivariables iis, ithe ilarger ithe ibias ibut ithe ismaller ithe ivariance
iis. i- icorrect iAnswers i✔✔ i-False


14. iVariable iselection iis ia isimple iand isolved istatistical iproblem isince iwe ican iimplement iit iusing ithe
iR istatistical isoftware. i- icorrect iAnswers i✔✔ i-False

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