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QMB 3200 Test 2 UCF (Latest 2024/ 2025 Update) Review Questions & Verified Answers| 100% Correct| Grade A
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QMB 3200 Test 2 UCF (Latest 2024/ 2025 Update) Review Questions & Verified Answers| 100% Correct| Grade A Q: Test of Independence Answer: Contingency Table Test. used to determine if there is a significant relationship between two nominal (categorical) variables. The frequency of each cate...

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  • October 25, 2024
  • 22
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • qmb 3200 final exam
  • qmb 3200 midterm examqmb 3200 exam 1
  • qmb 3200 midterm examqmb 3200 exam 2
  • qmb 3200 midterm examqmb 3200 exam 3
  • qmb 3200 final examqmb 3200 test 1
  • qmb 3200 final examqmb 3200 test 2

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QMBl3200lTestl2lUCFl(LatestlUpdate)l
ReviewlQuestionsl&lVerifiedlAnswers|l100%
lCorrect|lGradelA

Q:lTestloflIndependence

Answer:
ContingencylTablelTest.lusedltoldeterminelifltherelislalsignificantlrelationshiplbetweenltwolnom
inall(categorical)lvariables.lThelfrequencylofleachlcategorylforlonelnominallvariablelislcompare
dlacrosslthelcategoriesloflthelsecondlnominallvariable.lUselChi-squarelTest




Q:lANOVAl(analysisloflvariance)

Answer:
Statisticallmodelslandltheirlassociatedlestimationlproceduresl(suchlaslthel"variation"lamongland
lbetweenlgroups)lusedltolanalyzeltheldifferenceslamonglgrouplmeanslinlalsample.lUselFltest.




Q:lSimplelLinearlRegression

Answer:
statisticallmethodlthatlallowslusltolsummarizelandlstudylrelationshipslbetweenltwolcontinuousl(
quantitative)lvariables:lOnelvariable,ldenotedlx,lislregardedlaslthelpredictor,lexplanatory,lorlind
ependentlvariable.




Q:lMultiplelRegression

Answer:

,usedlwhenlwelwantltolpredictlthelvalueloflalvariablelbasedlonlthelvaluelofltwolorlmorelotherlva
riables.lThelvariablelwelwantltolpredictlislcalledltheldependentlvariablel(orlsometimes,ltheloutc
ome,ltargetlorlcriterionlvariable).




Q:lHypothesisl(GoodnessloflFit)lTest
forlProportionsloflalMultinomiallPopulation


Answer:
H0:lThelpopulationlfollowslalmultinomialldistributionlwithlspecifiedlprobabilitieslforleachloflth
elklcategories

Note:lTheltestlstatisticlhaslalchi-squareldistributionlwithl(kl-
l1)ld.f.lprovidedlthatlthelexpectedlfrequencies,leilarel≥l5lforlalllcategoriesli.

Rejectionlrule:
RejectlH0liflp-valuel<lalorlChsql>=lCriticallvalue

DF:lK-1

Chi-squarelGoodnessloflFitltestlislalwayslalone-sidedlupper-tailltest.




Q:lTestloflIndependence:lContingencylTables

Answer:
H0:lThelcolumnlvariablelislindependentloflthelrowlvariable

Rejectionlrule:
RejectlH0liflpl-valuel<lalorlChsql>=lCriticallvalue

DF:lnlrowslandlmlcolumns,ltherelare
(nl-l1)(ml-l1)ldegreesloflfreedom

Chi-squarelContingencylTestl(TestloflIndependence)lislalwayslalone-sidedlupper-tailltest.

, Q:lGoodnessloflFitlTest:lPoissonlDistribution

Answer:
H0:lThelpopulationlhaslalPoissonldistribution

Rejectionlrule:
RejectlH0liflpl-valuel<lalorlChsql>=lCriticallvalue

DF:lKl(#lcategories)l-l2ldegreesloflFreedom

Note:lChi-squarelGoodnessloflFitltestlislalwayslalone-sidedlupper-tailltest.




Q:lChi-squareltestlRequirementlforlexpectedlfrequenciesl(ei)

Answer:
fltherelarelfewerlthanlfivelexpectedloccurrenceslforlsomelvalues,
combineladjacentlvalueslandlreducelthelnumberloflcategorieslaslnecessary




Q:lGoodnessloflFitlTest:lNormallDistribution

Answer:
H0:lThelpopulationlhaslalnormalldistribution

Rejectionlrule:
RejectlH0liflpl-valuel<lalorlChsql>=lCriticallvalue

DF:lKl(#lclasses)l-l3ldegreesloflFreedom




Q:lThelnulllhypothesislforlalchi-
squareltestloflindependencelislthatltheltwolvariableslarelnotlrelated.

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