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C207 WGU| 344 QUESTIONS| WITH COMPLETE SOLUTIONS
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C207 WGU| 344 QUESTIONS| WITH COMPLETE SOLUTIONS
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C207 WGU| 344 QUESTIONS| WITHCOMPLETE SOLUTIONS
Whatsisstheskeysfocussonsanalysis?ssCORRECTsANSWERS:sTospredictstrendssusingsquantitativesdat
a.
Whatsaresthesfourslevelssofsmeasurement?ssCORRECTsANSWERS:s1.sNominal
2.sOrdinal
3.sIntervals
4.sRatio
NominalsdatassCORRECTsANSWERS:sisscategorical.sItshassnosnumericalsvalue.sIt'ssnotsasnumber.s
Examples:s
-thestypessofspizzasyoussell
-meatball
-veggie
-cheeses
(thesesareslabels,stheyscan'tsbesaddedsorssubtracted)
OrdinalsdatassCORRECTsANSWERS:sissranked,sbutsdoesn'tshavesasspecificsvalue.s
Example:
-thessizesofspizzas(small,smedium,slarge)
(wescan'tsaddsorssubtractsthesesbutswescansputsthemsinssequentialsorder)
-sorders(keysword)
-snosnumericalsvalue
IntervalsdatassCORRECTsANSWERS:sdatasissnumeric.sYouscansaddsandssubtractsit.sItshassassequenti
alsvalue.sEachsvaluesissequallysspacedsfromsthesprevioussvalue.s
Example:
-sdrinkssizessaresintervals(16soz,s20soz,s24soz)stheysaresequallysspacedsabouts(4sozsspaced)
RatiosdatassCORRECTsANSWERS:sissnumeric.sYourssalesspersdaysaresratiosdata.s
Example"
-s10ssalessofs$12.99saspieces=s$129.99
(thesvalueshassastruesvaluesfromszero)
Toschallengesthesvaliditysandsreliabilitysofsdata,saskstwosthings.ssCORRECTsANSWERS:sArestheres
anysoutlierssandsarestheresanyserrors?
,OutliersssCORRECTsANSWERS:sDon'tsthrowsthemsout.sDosthemsinsbothsways.s
Example:
lastsweek,syousweresclosedsforstwosdayssforsrenovations.sSalessweresaszerosforsthosestwosdays.sThat'ss
ansoutlier.sYousincludesthesoutliersstosknowshowsitsseffectingsyoursbottomsline.
2scategoriessofserrorsssCORRECTsANSWERS:s1.sRandom
2.sSystematic
RandomserrorssCORRECTsANSWERS:sisssomethingsthatshappenssjustsoncesandswillsnotsrepeatsover
stime.s
Example:
ifsyousarestryingstosfindsaveragesdeliverystimessandsonesdeliveryswasseffectedsbysasfourshoursChicagos
trafficsdelay,sthat'ssrandom.
SystematicserrorssCORRECTsANSWERS:sisswhensyoursdeliveriess(example)saresslowsandsitsissnotsb
yschance.s
Example:
Asdeliverysdrivershassnursedsthesfuelsinjectorsonshisscarsforsthespastssixsmonths.sItsbreakssdownsoneso
utsofseverys20sdeliveriesshesmakes.sThississSystematicserror.sItsrepeatssitself.
OmissionserrorssCORRECTsANSWERS:sAnserrorsbecausessomethingsissmissing.s
Example:
Asdeliverysdriversdidn'tsclocksinsorsoutsforshissdelivery.sThatsdataswillsnotsbesincludedsinsstudysandsit'
ssrelevant.s
-Asdatassetswithsansomissionserrorsissdefinedsassdistorted.
outsofsrangeserrorssCORRECTsANSWERS:s
Whatsissusedstosreduceserrors?ssCORRECTsANSWERS:sasnumbersofsqualityscontrolstools.s
Example:
assurveyscustomersstakesonlysallowssthemstosselectsresponsessfromsaslist.sThatsway,stheyscan'tstypesan
ythingsinswrong.
TreatmentssCORRECTsANSWERS:sExample:sYouswantstosmakesascrispierspizzasandstosdosthis,syous
applysthreesdifferentssetssofsoilstosthreesdifferentspizzastosmeasuresthescrispinesssofsthescrust.
BlindsstudyssCORRECTsANSWERS:swhensthessubjectssdon'tsknowsifstheysaresreceivingsthestreatme
ntsorsasplacebos(asharmlesssproceduresprescribedsforsthespsychologicalsbenefitsofsthesrecipient)
DoublesblindsstudyssCORRECTsANSWERS:sAnsexperimentsinswhichsneithersthesparticipantsnorsthe
sresearchersknowsswhethersthesparticipantshassreceivedsthestreatmentsorsthesplacebos(asharmlesssproc
eduresprescribedsforsthespsychologicalsbenefitsofsthesrecipient)
DescriptivessCORRECTsANSWERS:s
, Forscompaniesstosattractsandsretainstheirsbestscustomersstheysneedsascompletesportraitsofswhostheysar
e.sTosdevelopsthissportraitscompaniessturnsto...ssCORRECTsANSWERS:sanalytics
Asmanufacturerswantsstosmaximizestheirsfactorysoutputswhilesspecificallysminimizingslaborscosts.s
Whatstypesofsanalyticssmightstheysemploystosachievesthissgoal?ssCORRECTsANSWERS:sprescriptiv
esanalytics
Whatstypesofsdataserrorsthatsoccurssinsmeasurementsissconstantswithinsasdatassetsandsisssometimessca
usedsbysfaultysequipmentsorsbias?ssCORRECTsANSWERS:smeasurementsbias
Ascitysgovernmentsisstryingstosdeterminesthesnationalsoriginssofsitssrecentsimmigrantspopulation.sIfsas
surveysofsthesimmigrantspopulationsissconductedsinsEnglishswhatstypesofserrorsbespresentsinsthesdata?
ssCORRECTsANSWERS:sOmission
ThesusesofsBigsDatasissincreasinglysimportantstosbusinessessinscompetitivesmarkets.sWhichsofsthesfol
lowingscharacteristicssissnotstruesofsbigsdata?ssCORRECTsANSWERS:scansbesanalyzedswithstraditio
nalsspreadsheets
ThesDavenport-Kimsthree-
stagesmodelsconsistssofsframingsthesproblem,ssolvingsthesproblem,sandscommunicatingsresults.sWhi
chstwosofsthesfollowingsarespartsofsframingsthesproblemsstage?ssCORRECTsANSWERS:s-
determinesthesscopesofsthesproblem
-reviewsofsprevioussfindings
Ashealthcaresprovidersissresearchingsbloodsglucoseslevelssbeforesandsaftersexercising.sWhatstwosele
mentssshouldsbespartsofsanysexperimentalsstudyssuchsassthis?ssCORRECTsANSWERS:streatmentspro
cedures
Runnersscovers26.2smilessinsthesOlympicssmarathon.sWhatslevelsofsmeasurementsissthis?ssCORREC
TsANSWERS:sratio
WhatslevelsofsmeasurementsissthestypesofscarssproducedsinsFordsfactory?ssCORRECTsANSWERS:sn
ominal
Whatslevelsofsmeasurementsissthissthes10sbestscitiessinsthesU.S.stosretiresin?ssCORRECTsANSWERS:s
Ordinal
Whatslevelsofsmeasurementsareswomen'ssdressssizess(2,4,6,setc.)?ssCORRECTsANSWERS:sInterval
Aslocalsschoolsboardsissstudyingsthesimpactsofsasproposedschangesinstestingsonsmathsscores.sBiasscans
besintroducedsintosthesstudysbysbothsstudentssandsteachers.sWhichsresearchstechniqueswouldselimina
testhisstypesofsbias?ssCORRECTsANSWERS:sDoublesblindsstudy
AsCompany'ssproductsdevelopmentsteamstests3snewscarswaxessbyswaxings5scarsswithseachswaxsandst
hensrunningsthemsthroughsascarswash.sTheysthensrecordsnumbersofswashessitstakessbeforestheswaxsbe
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