Solution Manual for Statistics for Nursing Research A
Workbook for Evidence-Based Practice 3rd Edition
Susan Grove Daisha | COMPLETE STUDY GUIDE.
observationslthatlcan,latlleastltheoretically,ltakelanyldecimallvalue.lTheselarelalsolknownlas
lmetric,
morphometric,lorlquantitativeltraits.l-lcontinuouslvariableslorltraits:
observationslthatlarelcategorizedlinltwolorlmorelseparate,lnon-
overlappinglgroups;lTheselarelalsolknown
asldiscrete,ldiscontinuous,lnon-metric,lmorphoscopic,lorlqualitativeltraits.l-
lcategoricallvariableslorltraits:
1.lNominal
2.lOrdinal
3.lInterval
4.lRatiol-lWhatlarelthelfourlmeasurementlscales?
Nominal;lexlmalelorlfemale,lpresencelorlabsenceloflmetriclsuturel-
lMeasurementlscalelwherelthellevelslhavelnolinherentlrankinglbetweenlthem
ordinallscale,lexlthelorderlinlwhichlracerslcrosslthelfinishllinel(first,lsecond,lthird,letc.,lignorin
g
theirlexactltimes)l-
lMeasurementlscalelwherelthellevelslhavelanlinherentlrankinglbutltheldifferenceslbetweenll
evelslarelnotlproportionallorlarelnotlmeasured.lusedltoldescribelcategoricallvariables
semi-
continuouslordinallscale,lex.lpubiclsymphysislphasesl(phasel1learly,l1llate,l2learly,l2llate,let
c.)l-lthellevelslappearlcategoricallfirstlglancelbutlarelinlrealitylat
leastlpartiallylcontinuouslbecauselthelforceslthatlcreatelthemlinlnaturelarelalsolcontinuous.l
The
levelslclearlylchangelgraduallyl('grade')lfromloneltolthelnextlbutlforlconveniencelarelmeasur
ed
usinglanlordinallscalelthatlemploysldiscretelcategorieslbecauselitlisldifficultltolpreciselylmea
surelthe
actualldifferenceslbetweenleachllevel.
ratiolscalelex.lagelatldeathl(inldayslorlyears)l-
lcontinuouslmeasurementslthatlhavelranklANDlinlwhichldifferenceslbetweenlthe
statesloflthelvariablelARElregular,lmeaninglthatltherelislproportionalityloflthelmeasurementl
scale.
intervallscalelex.lagelatldeathlaslmeasuredlfromlthelpointloflbirthl(ratherlthanlatlthelpointlof
Workbook for Evidence-Based Practice 3rd Edition
Susan Grove Daisha | COMPLETE STUDY GUIDE.
observationslthatlcan,latlleastltheoretically,ltakelanyldecimallvalue.lTheselarelalsolknownlas
lmetric,
morphometric,lorlquantitativeltraits.l-lcontinuouslvariableslorltraits:
observationslthatlarelcategorizedlinltwolorlmorelseparate,lnon-
overlappinglgroups;lTheselarelalsolknown
asldiscrete,ldiscontinuous,lnon-metric,lmorphoscopic,lorlqualitativeltraits.l-
lcategoricallvariableslorltraits:
1.lNominal
2.lOrdinal
3.lInterval
4.lRatiol-lWhatlarelthelfourlmeasurementlscales?
Nominal;lexlmalelorlfemale,lpresencelorlabsenceloflmetriclsuturel-
lMeasurementlscalelwherelthellevelslhavelnolinherentlrankinglbetweenlthem
ordinallscale,lexlthelorderlinlwhichlracerslcrosslthelfinishllinel(first,lsecond,lthird,letc.,lignorin
g
theirlexactltimes)l-
lMeasurementlscalelwherelthellevelslhavelanlinherentlrankinglbutltheldifferenceslbetweenll
evelslarelnotlproportionallorlarelnotlmeasured.lusedltoldescribelcategoricallvariables
semi-
continuouslordinallscale,lex.lpubiclsymphysislphasesl(phasel1learly,l1llate,l2learly,l2llate,let
c.)l-lthellevelslappearlcategoricallfirstlglancelbutlarelinlrealitylat
leastlpartiallylcontinuouslbecauselthelforceslthatlcreatelthemlinlnaturelarelalsolcontinuous.l
The
levelslclearlylchangelgraduallyl('grade')lfromloneltolthelnextlbutlforlconveniencelarelmeasur
ed
usinglanlordinallscalelthatlemploysldiscretelcategorieslbecauselitlisldifficultltolpreciselylmea
surelthe
actualldifferenceslbetweenleachllevel.
ratiolscalelex.lagelatldeathl(inldayslorlyears)l-
lcontinuouslmeasurementslthatlhavelranklANDlinlwhichldifferenceslbetweenlthe
statesloflthelvariablelARElregular,lmeaninglthatltherelislproportionalityloflthelmeasurementl
scale.
intervallscalelex.lagelatldeathlaslmeasuredlfromlthelpointloflbirthl(ratherlthanlatlthelpointlof
