WGU C985 DEFINITIONS QUESTIONS
WITH CORRECT ANSWERS
ANOVA rtest r- rCorrect rAnswer r- rmay rbe rused rin rresearch rstudies rwhere rthere rare rtwo ror
rmore rgroups rto rcompare.
Chi-Squared rTest r- rCorrect rAnswer r- rdetermine rif ran rassociation rexists rbetween rtwo
rcategorical rvariables.
Control rGroup r- rCorrect rAnswer r- rIn ra rhealthcare renvironment, rthis rgroup rof rpatients rdo
rnot rreceive rthe rtreatment rthat ris rbeing rstudied.
Experimental rGroup r- rCorrect rAnswer r- rThis rgroup rof rpatients rreceive rthe rtreatment
rbeing rstudied, rand rwith rfollow-up robservation rto rdetermine rthe reffect rof rthe rtreatment.
F-Test r- rCorrect rAnswer r- rdesigned rto rtest rif rtwo rpopulation rvariances rare requal. rThe
rratio rof rthe rtwo rvariances ris rcompared. rIf rthey rare requal, rthe rratio rof rthe rvariances rwill rbe
r1.
Frequency r- rCorrect rAnswer r- rmeasure rhow roften ra rparticular rvalue roccurs rto rassess rthe
rimportance rof ra rvalue ror rcheck rthe rvariation rof rthe rvalues rin ra rstudy.
Hypothesis r- rCorrect rAnswer r- rA rproposed rexplanation rfor ran robservation rthat rleads rto ra
rprediction. rThrough rinvestigation rand ruse rof rstatistical rdata, rthose rdoing rthe rstudy rwill
reither rconfirm ror rreject rthe rhypothesis. rTesting rthe rhypothesis rwill rshow rif rthere ris ra rlink
r(or rnot) rbetween rtwo ror rmore rvariables.
Integrity r- rCorrect rAnswer r- rResearch ralways rmakes rsome rassumptions, rdepending ron
rthe rtype rof rmethod rused. rResearch rassumptions rmust rbe ridentified rto rdetermine
rpossible rbreaches rof rintegrity.
Interval rData r- rCorrect rAnswer r- rincludes runits rof requal rsize, rsuch ras rIQ rresults. rThere ris
rno rzero rpoint. rAn rexample rof rinterval rscale ris rtime: rTime ris rmeasured rin r24 rhours rin reach
rday; rthe rtime rbetween reach rhour ris rthe rsame, r60 rminutes.
Mean r- rCorrect rAnswer r- ris rthe rarithmetic raverage. rDivide rthe rsum rof rall rscores rby rthe
rtotal rnumber rof rscores.
Median r- rCorrect rAnswer r- ris rthe rmidpoint rof rdistribution rof rvalues, ror rthe rpoint rabove ror
rbelow rwhich r50 rpercent rof rthe rvalues rfall.
WITH CORRECT ANSWERS
ANOVA rtest r- rCorrect rAnswer r- rmay rbe rused rin rresearch rstudies rwhere rthere rare rtwo ror
rmore rgroups rto rcompare.
Chi-Squared rTest r- rCorrect rAnswer r- rdetermine rif ran rassociation rexists rbetween rtwo
rcategorical rvariables.
Control rGroup r- rCorrect rAnswer r- rIn ra rhealthcare renvironment, rthis rgroup rof rpatients rdo
rnot rreceive rthe rtreatment rthat ris rbeing rstudied.
Experimental rGroup r- rCorrect rAnswer r- rThis rgroup rof rpatients rreceive rthe rtreatment
rbeing rstudied, rand rwith rfollow-up robservation rto rdetermine rthe reffect rof rthe rtreatment.
F-Test r- rCorrect rAnswer r- rdesigned rto rtest rif rtwo rpopulation rvariances rare requal. rThe
rratio rof rthe rtwo rvariances ris rcompared. rIf rthey rare requal, rthe rratio rof rthe rvariances rwill rbe
r1.
Frequency r- rCorrect rAnswer r- rmeasure rhow roften ra rparticular rvalue roccurs rto rassess rthe
rimportance rof ra rvalue ror rcheck rthe rvariation rof rthe rvalues rin ra rstudy.
Hypothesis r- rCorrect rAnswer r- rA rproposed rexplanation rfor ran robservation rthat rleads rto ra
rprediction. rThrough rinvestigation rand ruse rof rstatistical rdata, rthose rdoing rthe rstudy rwill
reither rconfirm ror rreject rthe rhypothesis. rTesting rthe rhypothesis rwill rshow rif rthere ris ra rlink
r(or rnot) rbetween rtwo ror rmore rvariables.
Integrity r- rCorrect rAnswer r- rResearch ralways rmakes rsome rassumptions, rdepending ron
rthe rtype rof rmethod rused. rResearch rassumptions rmust rbe ridentified rto rdetermine
rpossible rbreaches rof rintegrity.
Interval rData r- rCorrect rAnswer r- rincludes runits rof requal rsize, rsuch ras rIQ rresults. rThere ris
rno rzero rpoint. rAn rexample rof rinterval rscale ris rtime: rTime ris rmeasured rin r24 rhours rin reach
rday; rthe rtime rbetween reach rhour ris rthe rsame, r60 rminutes.
Mean r- rCorrect rAnswer r- ris rthe rarithmetic raverage. rDivide rthe rsum rof rall rscores rby rthe
rtotal rnumber rof rscores.
Median r- rCorrect rAnswer r- ris rthe rmidpoint rof rdistribution rof rvalues, ror rthe rpoint rabove ror
rbelow rwhich r50 rpercent rof rthe rvalues rfall.
