Solution Manual for
b b
Statistics for Nursing
b b
wb Research A b
b Workbookfor b
b Evidence-Based
b Practice 3rd Edition
b b
wb Susan Grove Daisha
b b
, AnswerwbGuidelineswbforwbQuestionswbto bBe
wGraded
EXER
Identifying Levels wb w
1
wCISE
ofMeasurement:
b ww b
w
bNominal, Ordinal, wb wb
Interval, and
w wb w w
Ratio bw
The w questions w are w in w bold w followed w by w answers.
1. In wTable w1, widentify wthe w wlevel w wof w wmeasurement w wfor w wthe w wcurrent w
wtherapy w wvariable. wProvide w a w rationale w for w your w answer.
Answer: wThe wcurrent wtherapy wvariable wwas wmeasured wat wthe wnominal wlevel. w wThese
w wdrug wcategories wwere wprobably wdeveloped wto wbe wexhaustive wfor wthis wstudy w wand
w wincluded w wthe wcategories wof wdrugs w wthe w wsubjects w wwere w wreceiving. w wHowever,
w wthe w wcategories w ware w wnot wexclusive, wsince w wpatients w ware w wusually w won w
wmore w wthan w wone w wcategory w wof w wthese w wdrugs w wto wmanage wtheir w whealth w
wproblems. w wThe w wcurrent w wtherapies w ware w wnot w wmeasured w wat w wthe w wordinal
wlevel wbecause wthey wcannot w wbe w wrank w wordered, w wsince w wno w wdrug w wcategory w
wcan w wbe w wconsidered wmore wor wless w wbeneficial w wthan w wanother w wdrug w wcategory
w w(see w wFigure w w1-1; w wGrove w w& w wGray, w2019).
2. What w is w the w mode w for w the w current w therapy w variable w in w this w study?
w Provide w awrationale w for wyour w answer.
Answer: w The w mode w for w current w therapy w was w β w blocker. w A w total w of w 100
w (94%) w of w the w cardiacwpatients
were w w receiving w w this w w category w w of w w drug, w w which w w w was w w w the w w w most w
w w common w w w prescribedwdrug w for w this wsample.
3. What w statistics w were w conducted w to w describe w w the w w BMI w w of w w the w
w cardiac w w patients w w in wthis wsample? w Discuss wwhether wthese wanalysis
wtechniques wwere wappropriate wor winappropriate.
Answer: w BMI w was w described w w wwith w w wa w w wmean w w wand w w wstandard w w wdeviation
w w w(SD). w w wBMI wmeasurement w resulted w in w ratio-level w data w with w continuous
w values w and w w wan w w wabsolute w w wzero w(Stone w & w Frazier, w 2017). w w wRatio- w w
wlevel w data w should w be w analyzed w with w parametric w statistics wsuch w as w the w mean
w and w SD w (Grove w & w Gray, w2017; w Knapp, w 2017).
4. Researchers w used w the w following w item w to w measure w registered w nurses’
w (RNs) w income w inwa w study: wWhat w category w identifies w your w current w income w as
w an w RN?
a. Less w than w $50,000
b. $50,000 w to w 59,999
c. $60,000 w to w 69,999
d. $70,000 w to w 80,000
e. $80,000 w or w greater
What w level w of w measurement w is w this w income w variable? w Does w the w
w income w w variablewfollow w the w rules w outlined w in w Figure w 1-1? w Provide w a
w rationale w for w your w answer.
Answer: w In w this w example, w the w income w variable w is w measured w at w the w ordinal
,w level. w Thewincome w catego- w ries w are w exhaustive, w ranging w from w less w than
w $50,000 w to w greater w than
$80,000. w The w two w open-ended
, AG w 1-1
