WGU C207 Data Driven Decision Making E
n n n n n n
xam Questions With 100% Correct Answer
n n n n n
s 2024
n n
HownwouldnangreaternnumbernofnsamplesnandnanfewernnumbernofnpopulationsnaffectnannAN
OVAnanalysis?n-nCorrectnAnswer-Thenresultsnwouldnbenmorenaccurate.
Marynisndeterminingnthenlikelihoodnthatnshenwillnlosenmoneynonnanninvestment.nTherenisnann
expectedn10npercentngainninnannormallyndistributedndataset,nwithnanstandardndeviationnofn1
0npercent.nThenlikelihoodnshe'llnlosenmoneynisn_______npercent.n-nCorrectnAnswer-16
Selectnthenchoicenthatnisntrue.nRegressionnanalysis:n-nCorrectnAnswer-
takesninformationnfromnonendatansetnandncannpredictninformationnfornanotherndatanset.
Janenworksnfornanpublicnhealthncompany.nShenisnworkingnonnannanti-
tobacconcampaignnandnisninterestedninnhownsmokingncigarettesnaffectsnansmoker'sncholest
erol.nShencouldnusenthennumbernofncigarettesnsmokednperndaynasnhern_____nvariablenandnp
lacenitnonnthen__-axis.n-nCorrectnAnswer-independent,nx
Wenperformnanregressionnanalysisnonnanpairnofnvariablesnandndeterminenthatntherenisnanline
arnrelationship.nThenregressionnlinenisndeterminedntonbeny=12x−5y=12x-
5.nWhatntypenofnlinearnrelationshipnexistsnbetweennthenindependentnvariable,nx,nandnthende
pendentnvariable,ny?n-nCorrectnAnswer-positive
describenR-squared?n-nCorrectnAnswer-a)nR-squarednmeasuresnthengoodnessnofnfit.
b)nR-squaredncannbenmisleadingnifntherenarenfalsenindependentnvariables.
c)nR-squarednisn1.0nwhenncorrelationnisn-1norn1.
Whichnofnthenfollowingnarentechniquenanmanagernusesnwhennforecasting?n-
nCorrectnAnswer-A)TimenSeries
c)nAssociative
d)nJudgmental
Whichnofnthenfollowingnarenadvantagesnofnclusternanalysis?n-nCorrectnAnswer-
b)nItnsortsnindividualndatanpointsnintondifferentngroups.
c)nItnwillnnotnhelpninndeterminingntargetnmarkets.
d)nItndoesnnotnidentifynsuccessfulnandnunsuccessfulnhabitsnandnsystems.
Antrendnis...n-nCorrectnAnswer-
angeneralnslopenupwardnorndownwardnovernanlongnperiodnofntime.
Ifntherenisnanrelationshipnbetweennvariables,nbutnthenrelationshipnisnnotnlinear,nwhatnpossibl
enchallengenwithnregressionncouldnitnbe?n-nCorrectnAnswer-PolynomialnRegression
,CatherinenisntryingntonsellnanticketntonthenSupernBowl.nShenisndeterminingnwhethernornnotnsh
enshouldnsellnanticketnnownornwaitnuntilnjustnbeforenthengamenandntrynandnsellnitnthen.nCurrent
ly,nsomeonenisnofferingn$350nfornthenticket.nFromnresearchnofnpastnprices,nshenknowsnthatnt
henticketsnimmediatelynbeforenthenSupernBowlnarensoldnfornaboutn$500.nShendeterminesnth
atntherenisnan75npercentnchancenshenwillnbenablentonsellnthenticketnimmediatelynbeforenthenS
upernBowl.nBasednonnexpectednpayoffsnfromnriskndecisionnmaking,nwhatnshouldnshendo?nH
ownmuchnisnthendifferencenifnshenchoosesntonsellnnown-nCorrectnAnswer-
Catherinenshouldnwaitntonsellnticket;nthendifferencenwillnben$25.
Heteroscedasticityn-nCorrectnAnswer-
Anregressionninnwhichnthenvariancesninnynfornthenvaluesnofnxnarennotnequal
CumulativenAverage-TimenLearningnModeln-nCorrectnAnswer-
Anlearningncurvenmodelninnwhichnthencumulativenaveragentimenpernunitndeclinesnbynanconst
antnpercentageneachntimenthencumulativenquantitynofnunitsnproducednisndoubled
DependentnVariablen-nCorrectnAnswer-
Thenvariablenwhosenvaluendependsnonnonenornmorenvariablesninnthenequation;ntypicallynthen
costnornactivityntonbenpredicted
IndependentnVariablen-nCorrectnAnswer-
Thenvariablenpresumedntoninfluencenanothernvariablen(dependentnvariable);ntypicallynitnisnth
enlevelnofnactivitynorncostndriver
AnalysisnofnVariancen(ANOVA)n-nCorrectnAnswer-
Anstatisticalnmethodnthatnhelpsnidentifynthensourcesnofnvariabilitynbyncomparingntheirnmeans
nornaverages;nitncomparesnthenvariationnwithinnansamplentonthenvariationnbetweennsamplesnt
onseenifnanyndifferencesnarenthenresultnofnsomencontributingnfactornornifnthendifferencesnoccu
rnbynchancenalon
ExperiencenCurven-nCorrectnAnswer-
Ancurventhatnshowsnthendeclineninncostnpernunitninnvariousnbusinessnfunctionsnofnthenvaluenc
hainnasnthenamountnofnthesenactivitiesnincreases
CrossovernAnalysisn-nCorrectnAnswer-
Allowsnandecisionnmakerntonidentifynthencrossovernpoint,nwhichnrepresentsnthenpointnatnwhic
hnwenarenindifferentnbetweennthenplans
Cyclicalityn-nCorrectnAnswer-
Repetitionnofnupn(peaks)norndownnmovementsn(troughs)nthatnfollownorncounteractnanbusine
ssncyclenthatncannlastnseveralnyears
LinearnProgrammingn-nCorrectnAnswer-
Anmathematicalntoolnusedntonoptimizenanfunctionn(thenobjectivenfunction)nsubjectntonvariousn
, constraints,nallnofnwhichnarenlinear.nOftennusedntonfindnthencombinationnofnproductsnthatnwilln
maximizenprofitsnornminimizencosts
SimplenLinearnRegressionn-nCorrectnAnswer-
Anformnofnregressionnanalysisnwithnonlynonenindependentnvariable
RegressionnLinen-nCorrectnAnswer-
then"linenofnbestnfit"nwherenthenmarginnofnerrornatneverynpointnisnminimized
DatanManagementn-nCorrectnAnswer-
Thenmanagement,nincludingncleaningnandnstorage,nofncollectedndata
RandomnVariationn-nCorrectnAnswer-
Thenvariabilitynofnanprocessnwhichnmightnbencausednbynirregularnfluctuationsnduentonchance
nthatncannotnbenanticipated,ndetected,norneliminated
Seasonalityn-nCorrectnAnswer-Regularnpatternnofnvolatility,nusuallynwithinnansinglenyear
Homoscedasticityn-nCorrectnAnswer-
Anregressionninnwhichnthenvariancesninnynfornthenvaluesnofnxnarenequalnornclosentonequal
Irregularityn-nCorrectnAnswer-One-
timendeviationsnfromnexpectationsncausednbynunforeseenncircumstancesnsuchnasnwar,nnat
uralndisasters,npoornweather,nlabornstrikes,nsingle-occurrencencompany-
specificnsurprisesnornmacroeconomicnshocks
Chi-squarednTestn-nCorrectnAnswer-
Anhypothesisntestnthatnisnusedntonexaminenthendistributionnofncategoricalndata
ExpectednValuen-nCorrectnAnswer-
ThenExpectednValuenfornannalternativenisnthensumnofnallnpossiblenpayoffsnfornthatnalternative
,neachnweightednbynthenprobabilitynofnthatnpayoffnoccurring
MultiplenLinearnRegressionn-nCorrectnAnswer-
Anstatisticalnmethodnusedntonmodelnthenrelationshipnbetweennonendependentn(ornresponse)
nvariablenandntwonornmorenindependentn(ornexplanatory)nvariablesnbynfittingnanlinearnequati
onntonobservedndata
RegressionnAnalysisn-nCorrectnAnswer-
Anstatisticalnanalysisntoolnthatnquantifiesnthenrelationshipnbetweennandependentnvariablenan
dnonenornmorenindependentnvariables
DecisionnTreen-nCorrectnAnswer-
Andiagramnofnpossiblenalternativesnandntheirnexpectednconsequencesnusedntonformulatenp
ossiblencoursesnofnactionsninnorderntonmakendecisions
n n n n n n
xam Questions With 100% Correct Answer
n n n n n
s 2024
n n
HownwouldnangreaternnumbernofnsamplesnandnanfewernnumbernofnpopulationsnaffectnannAN
OVAnanalysis?n-nCorrectnAnswer-Thenresultsnwouldnbenmorenaccurate.
Marynisndeterminingnthenlikelihoodnthatnshenwillnlosenmoneynonnanninvestment.nTherenisnann
expectedn10npercentngainninnannormallyndistributedndataset,nwithnanstandardndeviationnofn1
0npercent.nThenlikelihoodnshe'llnlosenmoneynisn_______npercent.n-nCorrectnAnswer-16
Selectnthenchoicenthatnisntrue.nRegressionnanalysis:n-nCorrectnAnswer-
takesninformationnfromnonendatansetnandncannpredictninformationnfornanotherndatanset.
Janenworksnfornanpublicnhealthncompany.nShenisnworkingnonnannanti-
tobacconcampaignnandnisninterestedninnhownsmokingncigarettesnaffectsnansmoker'sncholest
erol.nShencouldnusenthennumbernofncigarettesnsmokednperndaynasnhern_____nvariablenandnp
lacenitnonnthen__-axis.n-nCorrectnAnswer-independent,nx
Wenperformnanregressionnanalysisnonnanpairnofnvariablesnandndeterminenthatntherenisnanline
arnrelationship.nThenregressionnlinenisndeterminedntonbeny=12x−5y=12x-
5.nWhatntypenofnlinearnrelationshipnexistsnbetweennthenindependentnvariable,nx,nandnthende
pendentnvariable,ny?n-nCorrectnAnswer-positive
describenR-squared?n-nCorrectnAnswer-a)nR-squarednmeasuresnthengoodnessnofnfit.
b)nR-squaredncannbenmisleadingnifntherenarenfalsenindependentnvariables.
c)nR-squarednisn1.0nwhenncorrelationnisn-1norn1.
Whichnofnthenfollowingnarentechniquenanmanagernusesnwhennforecasting?n-
nCorrectnAnswer-A)TimenSeries
c)nAssociative
d)nJudgmental
Whichnofnthenfollowingnarenadvantagesnofnclusternanalysis?n-nCorrectnAnswer-
b)nItnsortsnindividualndatanpointsnintondifferentngroups.
c)nItnwillnnotnhelpninndeterminingntargetnmarkets.
d)nItndoesnnotnidentifynsuccessfulnandnunsuccessfulnhabitsnandnsystems.
Antrendnis...n-nCorrectnAnswer-
angeneralnslopenupwardnorndownwardnovernanlongnperiodnofntime.
Ifntherenisnanrelationshipnbetweennvariables,nbutnthenrelationshipnisnnotnlinear,nwhatnpossibl
enchallengenwithnregressionncouldnitnbe?n-nCorrectnAnswer-PolynomialnRegression
,CatherinenisntryingntonsellnanticketntonthenSupernBowl.nShenisndeterminingnwhethernornnotnsh
enshouldnsellnanticketnnownornwaitnuntilnjustnbeforenthengamenandntrynandnsellnitnthen.nCurrent
ly,nsomeonenisnofferingn$350nfornthenticket.nFromnresearchnofnpastnprices,nshenknowsnthatnt
henticketsnimmediatelynbeforenthenSupernBowlnarensoldnfornaboutn$500.nShendeterminesnth
atntherenisnan75npercentnchancenshenwillnbenablentonsellnthenticketnimmediatelynbeforenthenS
upernBowl.nBasednonnexpectednpayoffsnfromnriskndecisionnmaking,nwhatnshouldnshendo?nH
ownmuchnisnthendifferencenifnshenchoosesntonsellnnown-nCorrectnAnswer-
Catherinenshouldnwaitntonsellnticket;nthendifferencenwillnben$25.
Heteroscedasticityn-nCorrectnAnswer-
Anregressionninnwhichnthenvariancesninnynfornthenvaluesnofnxnarennotnequal
CumulativenAverage-TimenLearningnModeln-nCorrectnAnswer-
Anlearningncurvenmodelninnwhichnthencumulativenaveragentimenpernunitndeclinesnbynanconst
antnpercentageneachntimenthencumulativenquantitynofnunitsnproducednisndoubled
DependentnVariablen-nCorrectnAnswer-
Thenvariablenwhosenvaluendependsnonnonenornmorenvariablesninnthenequation;ntypicallynthen
costnornactivityntonbenpredicted
IndependentnVariablen-nCorrectnAnswer-
Thenvariablenpresumedntoninfluencenanothernvariablen(dependentnvariable);ntypicallynitnisnth
enlevelnofnactivitynorncostndriver
AnalysisnofnVariancen(ANOVA)n-nCorrectnAnswer-
Anstatisticalnmethodnthatnhelpsnidentifynthensourcesnofnvariabilitynbyncomparingntheirnmeans
nornaverages;nitncomparesnthenvariationnwithinnansamplentonthenvariationnbetweennsamplesnt
onseenifnanyndifferencesnarenthenresultnofnsomencontributingnfactornornifnthendifferencesnoccu
rnbynchancenalon
ExperiencenCurven-nCorrectnAnswer-
Ancurventhatnshowsnthendeclineninncostnpernunitninnvariousnbusinessnfunctionsnofnthenvaluenc
hainnasnthenamountnofnthesenactivitiesnincreases
CrossovernAnalysisn-nCorrectnAnswer-
Allowsnandecisionnmakerntonidentifynthencrossovernpoint,nwhichnrepresentsnthenpointnatnwhic
hnwenarenindifferentnbetweennthenplans
Cyclicalityn-nCorrectnAnswer-
Repetitionnofnupn(peaks)norndownnmovementsn(troughs)nthatnfollownorncounteractnanbusine
ssncyclenthatncannlastnseveralnyears
LinearnProgrammingn-nCorrectnAnswer-
Anmathematicalntoolnusedntonoptimizenanfunctionn(thenobjectivenfunction)nsubjectntonvariousn
, constraints,nallnofnwhichnarenlinear.nOftennusedntonfindnthencombinationnofnproductsnthatnwilln
maximizenprofitsnornminimizencosts
SimplenLinearnRegressionn-nCorrectnAnswer-
Anformnofnregressionnanalysisnwithnonlynonenindependentnvariable
RegressionnLinen-nCorrectnAnswer-
then"linenofnbestnfit"nwherenthenmarginnofnerrornatneverynpointnisnminimized
DatanManagementn-nCorrectnAnswer-
Thenmanagement,nincludingncleaningnandnstorage,nofncollectedndata
RandomnVariationn-nCorrectnAnswer-
Thenvariabilitynofnanprocessnwhichnmightnbencausednbynirregularnfluctuationsnduentonchance
nthatncannotnbenanticipated,ndetected,norneliminated
Seasonalityn-nCorrectnAnswer-Regularnpatternnofnvolatility,nusuallynwithinnansinglenyear
Homoscedasticityn-nCorrectnAnswer-
Anregressionninnwhichnthenvariancesninnynfornthenvaluesnofnxnarenequalnornclosentonequal
Irregularityn-nCorrectnAnswer-One-
timendeviationsnfromnexpectationsncausednbynunforeseenncircumstancesnsuchnasnwar,nnat
uralndisasters,npoornweather,nlabornstrikes,nsingle-occurrencencompany-
specificnsurprisesnornmacroeconomicnshocks
Chi-squarednTestn-nCorrectnAnswer-
Anhypothesisntestnthatnisnusedntonexaminenthendistributionnofncategoricalndata
ExpectednValuen-nCorrectnAnswer-
ThenExpectednValuenfornannalternativenisnthensumnofnallnpossiblenpayoffsnfornthatnalternative
,neachnweightednbynthenprobabilitynofnthatnpayoffnoccurring
MultiplenLinearnRegressionn-nCorrectnAnswer-
Anstatisticalnmethodnusedntonmodelnthenrelationshipnbetweennonendependentn(ornresponse)
nvariablenandntwonornmorenindependentn(ornexplanatory)nvariablesnbynfittingnanlinearnequati
onntonobservedndata
RegressionnAnalysisn-nCorrectnAnswer-
Anstatisticalnanalysisntoolnthatnquantifiesnthenrelationshipnbetweennandependentnvariablenan
dnonenornmorenindependentnvariables
DecisionnTreen-nCorrectnAnswer-
Andiagramnofnpossiblenalternativesnandntheirnexpectednconsequencesnusedntonformulatenp
ossiblencoursesnofnactionsninnorderntonmakendecisions
