100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
ISYE6414 (Regression) Midterm 2 Questions And Answers. $11.99
Add to cart
Quickly navigate to
Preview
  2.  
  3. ISYE 6414
  4.  
  5. ISYE 6414

Exam (elaborations)

ISYE6414 (Regression) Midterm 2 Questions And Answers.
 0 purchase
  • Course
  • ISYE 6414
  • Institution
  • ISYE 6414

ISYE6414 (Regression) Midterm 2 Questions And Answers.ISYE6414 (Regression) Midterm 2 Questions And Answers.ISYE6414 (Regression) Midterm 2 Questions And Answers.ISYE6414 (Regression) Midterm 2 Questions And Answers.ISYE6414 (Regression) Midterm 2 Questions And Answers.ISYE6414 (Regression) Midterm...

[Show more]

Preview 2 out of 15  pages

Document information

  • September 7, 2024
  • 15
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • isye6414 regression midterm 2 questions and answ

Written for

  • ISYE 6414
  • ISYE 6414

Seller

avatar-seller
Wisdoms

Reviews received

Content preview

ISYE6414 (Regression) Midterm 2
Questions And Answers


What iis icooks idistance iused ifor? i- icorrect iAnswers i✔✔ i-It imeasures ihow imuch iall iof ithe ivalues iin
ithe iregression imodel ichange iwith ithe iith iobservation iis iremoved. iBasically iits ia itest ifor ioutliers




Rule iof ithumb: iD idenotes icooks idistance, iif iD iis i> i4/n

OR iD i> i1 ior iany ilarge iD ithen iit imay ibe ian ioutlier iand ishould ibe iremoved.

If ithe inormality iassumption idoes inot ihold, iwe ican ipursue ia itransformation iin ithe iresponse ivariable.
iT/F i- icorrect iAnswers i✔✔ i-True


If ithe ilinearity iassumption idoes inot ihold, iwe ican ipursue ia itransformation iin ithe iresponse ivariable.
iT/F i- icorrect iAnswers i✔✔ i-False, iwe ipursue ia itransformation iin ithe ipredictor ivariables.


R^2 iwill ialways iincrease iif iwe iadd imore ipredicting ivariables. iT/F i- icorrect iAnswers i✔✔ i-True

If iwe iwant ito icompare imodels iwith idifferent inumbers iof ipredicting ivariables, iwhat istatistic ishould
iwe iuse? i- icorrect iAnswers i✔✔ i-Adjusted iR^2 ibecause iit iadjusts ifor ithe inumber iof ipredicting
ivariables. iIt idoesn't iincrease iwhen iwe iadd imore ipredicting ivariables.


A istatistic ithat ieffectively isummarizes ihow iwell ithe iX's iare ilinearly irelated ito iY iis ithe icorrelation
icoefficient. iT/F i- icorrect iAnswers i✔✔ i-True


T/F i- iThe icorrelation icoefficient icannot ibe iused ito ievaluate ithe icorrelation ibetween ithe ipredicting
ivariables ifor idetecting i(near) ilinear idependence iamong ithe ivariables i(or imulticolinearity) i- icorrect
iAnswers i✔✔ i-False, iit iCAN


How ido iyou idiagnose imulticolinearity? i- icorrect iAnswers i✔✔ i-Calculate ithe iVIF i(variance iinflation
ifactor) ifor ieach ipredicting ivariable




VIF i= i1 i/ i(1 i- iR^2j)

, If iVIF i< imax(10, i1 i/ i(1- iR^2)) ithen iwe igot ia iproblem

If ia ivariable iis icorrelated ibut idoes inot ihave imulticolinearity, iis ithis ia iproblem? i- icorrect iAnswers
i✔✔ i-Not inecessarily ibruh


What idoes ithe iVIF imeasure i- icorrect iAnswers i✔✔ i-the iVIF imeasures ithe iproportional iincrease iin
ithe ivariance iof ibeta ihat icompared ito iwhat iit iwould ihave ibeen iif ithe ipredicting ivariables ihad ibeen
icompletely iuncorrelated.


True/False: iThe iresponse ivariable iin ilogistic iregression iis ia ibinary iresponse? i- icorrect iAnswers i✔✔ i-
True

True/False: iIn ilogistic iregression, iwe imodel ithe iprobability iof ia isuccess igiven ithe ipredicting
ivariables, inot ithe iresponse iitself. i- icorrect iAnswers i✔✔ i-True


What iare ithe iassumptions ifor ilogistic iregression? i- icorrect iAnswers i✔✔ i-Linearity iAssumption

Independence iAssumption

The iG-Link ifunction iis ia ilogit ifunction iAssumption

What iis ithe ilogit ifunction? i- icorrect iAnswers i✔✔ i-ratio ibetween ithe iprobability iof isuccess iover
iprobability iof ia ifailure. iSo ibasically iratio ibetween ilog iof iP iover i1-p


What iis ithe iinterpretation iof ithe ilogistic iregression icoefficient? i- icorrect iAnswers i✔✔ i-The ilog iof
ithe iodds iratio ifor ian iincrease iof ione iunit iin ithe ipredicting ivariable. iWe ido inot iinterpret ibeta iwith
irespect ito ithe iresponse ivariable ibut iwith irespect ito ithe iodds iof isuccess.


How imany iregression icoefficients iare ithere ifor ilogistic iregression? i- icorrect iAnswers i✔✔ i-Since
ithere iis ino ierror itime, iyou ihave iP i+ i1 iwith iintercept.


Logistic iregression iis idifferent ifrom istandard ilinear iregression iin ithat

a) iIt idoes inot ihave ian ierror iterm

b) iThe iresponse ivariable iis inot inormally idistributed.

c) iIt imodels iprobability iof ia iresponse iand inot ithe iexpectation iof ithe iresponse.

d) iAll iof ithe iabove. i- icorrect iAnswers i✔✔ i-d) iall iof ithe iabove

Which ione iis icorrect?

a) iThe ilogit ilink ifunction iis ithe ionly ilink ifunction ithat ican ibe iused ifor imodeling ibinary iresponse
idata.


b) iLogistic iregression imodels ithe iprobability iof ia isuccess igiven ia iset iof ipredicting ivariables.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller Wisdoms. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $11.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

70089 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling

Recently viewed by you

Exam (elaborations) ·

(0)

Psy 352 Week 4 Quiz Latest Update Real Quiz Graded A+

Exam (elaborations) ·

(0)

SOPHIA PATHWAYS Art History II Unit 3 Milestone 3-2.

Summary ·

(0)

Samenvatting Inleiding Recht (Vastgoed & Makelaardij)

Summary ·

(0)

Economie belangrijkste begrippen levensloop H1 t/m H3

Exam (elaborations) ·

(0)

ATI - Pedi Respiratory Practice Assessment Correct 100%

Exam (elaborations) ·

(0)

BCBA Exam Review (MOCK; 2) 2023 with complete solutions
$11.99
  • (0)
Add to cart
Added