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WGU D514 Final Exam (Latest 2024/ 2025 Update) Analytical Methods of Healthcare Leaders| Qs & As| Grade A| 100% Correct (Verified Answers)

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WGU D514 Final Exam (Latest 2024/ 2025 Update) Analytical Methods of Healthcare Leaders| Qs & As| Grade A| 100% Correct (Verified Answers) Q: ANOVA test Answer: Analysis of variance (ANOVA) may be used in research studies where there are two or more groups to compare. Q: Chi-square tests Answer: Chi-square tests determine if an association exists between two categorical variables. Q: Control group Answer: In a healthcare environment, this group of patients does not receive the treatment that is being studied. Q: Experimental group Answer: This group of patients receives the treatment being studied with follow-up observation to determine the effect of the treatment. Q: F-test Answer: The F-test is designed to test if two population variances are equal. The ratio of the two variances is compared. If they are equal, the ratio of the variances will be 1. Q: Frequency Answer: Frequencies measure how often a particular value occurs to assess the importance of a value or check the variation of the values in a study. Q: Hypothesis Answer: A proposed explanation for an observation that leads to a prediction. Through investigation and the use of statistical data, those doing the study will either confirm or reject the hypothesis. Testing the hypothesis will show if there is a link (or not) between two or more variables. Q: Integrity Answer: Research always makes some assumptions, depending on the type of method used. Research assumptions must be identified to determine possible breaches of integrity. Q: Interval data Answer: Interval data includes units of equal size, such as IQ results. There is no zero point. An example of interval scale is time: Time is measured in 24 hours in each day; the time between each hour is the same, 60 minutes. Q: Mean Answer: Mean is the arithmetic average. Divide the sum of all scores by the total number of scores. Q: Median Answer: Median is the midpoint of the distribution of values, or the point above or below which 50 percent of the values fall. Q: Methods section components Answer: When analyzing the quality of a study, a careful evaluation of the research methods can reveal critical details about population and sample, covariables and hypothesis, data presentation, statistical analysis, and study limitations. Q: Misleading statistics Answer:

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Uploaded on: November 27, 2024
Number of pages: 35
Written in: 2024/2025
Type: Exam (elaborations)
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WGUlD514lFinallExaml(LatestlUpdate)l
AnalyticallMethodsloflHealthcarelLeaders
|lQsl&lAs|lGradelA|l100%lCorrectl(Verifiedl
Answers)
Q:lANOVAltest

Answer:
Analysisloflvariancel(ANOVA)lmaylbelusedlinlresearchlstudieslwhereltherelareltwolorlmorelgr
oupsltolcompare.

Q:lChi-squareltests

Answer:
Chi-squareltestsldetermineliflanlassociationlexistslbetweenltwolcategoricallvariables.

Q:lControllgroup

Answer:
Inlalhealthcarelenvironment,lthislgrouploflpatientsldoeslnotlreceiveltheltreatmentlthatlislbeinglst
udied.

Q:lExperimentallgroup

Answer:
Thislgrouploflpatientslreceivesltheltreatmentlbeinglstudiedlwithlfollow-
uplobservationltoldetermineltheleffectlofltheltreatment.

,Q:lF-test

Answer:
ThelF-
testlisldesignedltoltestlifltwolpopulationlvarianceslarelequal.lThelratiolofltheltwolvarianceslislco
mpared.lIfltheylarelequal,lthelratioloflthelvarianceslwilllbel1.

Q:lFrequency

Answer:
Frequencieslmeasurelhowloftenlalparticularlvalueloccursltolassesslthelimportanceloflalvaluelorl
checklthelvariationloflthelvalueslinlalstudy.

Q:lHypothesis

Answer:
Alproposedlexplanationlforlanlobservationlthatlleadsltolalprediction.lThroughlinvestigationlandl
theluseloflstatisticalldata,lthoseldoinglthelstudylwillleitherlconfirmlorlrejectlthelhypothesis.lTest
inglthelhypothesislwilllshowlifltherelislallinkl(orlnot)lbetweenltwolorlmorelvariables.

Q:lIntegrity

Answer:
Researchlalwayslmakeslsomelassumptions,ldependinglonltheltypeloflmethodlused.lResearchlass
umptionslmustlbelidentifiedltoldeterminelpossiblelbreachesloflintegrity.

,Q:lIntervalldata

Answer:
Intervalldatalincludeslunitsloflequallsize,lsuchlaslIQlresults.lTherelislnolzerolpoint.lAnlexample
loflintervallscalelisltime:lTimelislmeasuredlinl24lhourslinleachlday;ltheltimelbetweenleachlhour
lislthelsame,l60lminutes.

Q:lMean

Answer:
Meanlislthelarithmeticlaverage.lDividelthelsumloflalllscoreslbyltheltotallnumberloflscores.

Q:lMedian

Answer:
Medianlislthelmidpointlofltheldistributionloflvalues,lorlthelpointlabovelorlbelowlwhichl50lperce
ntloflthelvalueslfall.

Q:lMethodslsectionlcomponents

Answer:
Whenlanalyzinglthelqualityloflalstudy,lalcarefullevaluationloflthelresearchlmethodslcanlreveallc
riticalldetailslaboutlpopulationlandlsample,lcovariableslandlhypothesis,ldatalpresentation,lstatisti
callanalysis,landlstudyllimitations.

Q:lMisleadinglstatistics

Answer:

, Interpretinglandlpresentinglthelresultslofldatalanalysislaffordslmanylopportunitieslforlaccidental
lorldeliberatelmisrepresentationslofldata.lCommonlexampleslincludelimplyinglcausation,lextrap
olatinglbeyondlthelreasonable,lrelyinglonlalbiasedlorlincompletelsample,landlusinglinappropriat
elgraphicallrepresentations.

Q:lMode

Answer:
Modelislthelvaluelthatloccurslmostlfrequentlylinltheldata.

Q:lMultivariatelregressionlanalyses

Answer:
Multivariatelregressionlanalyseslcanlbelusedltolanalyzelandladjustlrisk.lThislanalysislmodellcon
trastsleachlmeasuredlfactorltolthelpatient'slriskloflalparticularloutcome.

Q:lNominalldata

Answer:
Nominalldatalcanlbelmeasuredlaslalfrequencylorlpercentage,landlthelmeanlofltheseldatalcannotl
belcalculated.lNominalldatalinlhealthcarelmightlincludeldemographiclinformationlaboutlpatients
.lThelwordlnominallmeansl"pertainingltolalname."

Q:lOrdinalldata

Answer:
Ordinalldatalcanlbelmeasuredlaslalfrequency,landlthelmeanloflordinalldatalisloftenlcalculated.lO
rdinalldatalinlhealthcarelmightlincludelpatientlsatisfactionlsurveyslusinglalLikertlscale.lThelwor
dlordinallmeansltol"putlinlorder."

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WGU D514 Final Exam (Latest 2024/ 2025 Update) Analytical Methods of Healthcare Leaders| Qs & As| Grade A| 100% Correct (Verified Answers)

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