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TYPE:
MCDIFFICULTY:
Easy
KEYWORDS:
frequencydistribution
2.ReferringtoTable2-1,howmanytotalclaimsarerepresentedinthesample?
a）15
b）50
c）111
d）250
c
Moderate
interpretation,frequencydistribution
3.Atypeofverticalbarchartinwhichthecategoriesareplottedinthedescendingrankorderofthemagnitudeoftheirfrequenciesiscalleda
a）contingencytable.
b）Paretodiagram.
c）dotplot.
d）piechart.
b
Easy
Paretodiagram
TABLE2-2
Atameetingofinformationsystemsofficersforregionalofficesofanationalcompany,asurveywastakentodeterminethenumberofemployeestheofficerssuperviseintheoperationoftheirdepartments,whereXisthenumberofemployeesoverseenbyeachinformationsystemsofficer.
Xf_
17
25
311
48
59
4.ReferringtoTable2-2,howmanyregionalofficesarerepresentedinthesurveyresults?
b）11
c）15
d）40
5.ReferringtoTable2-2,acrossalloftheregionaloffices,howmanytotalemployeesweresupervisedbythosesurveyed?
b）40
c）127
d）200
6.Thewidthofeachbarinahistogramcorrespondstothe
a）differencesbetweentheboundariesoftheclass.
b）numberofobservationsineachclass.
c）midpointofeachclass.
d）percentageofobservationsineachclass.
a
TABLE2-3
Everyspringsemester,theSchoolofBusinesscoordinateswithlocalbusinessleadersaluncheonforgraduatingseniors,theirfamilies,andfriends.Corporatesponsorshippaysforthelunchesofeachoftheseniors,butstudentshavetopurchaseticketstocoverthecostoflunchesservedtogueststheybringwiththem.Thefollowinghistogramrepresentstheattendanceattheseniorluncheon,whereXisthenumberofguestseachgraduatingseniorinvitedtotheluncheonandfisthenumberofgraduatingseniorsineachcategory.
7.ReferringtothehistogramfromTable2-3,howmanygraduatingseniorsattendedtheluncheon?
a）4
b）152
c）275
d）388
Difficult
EXPLANATION:
Thenumberofgraduatingseniorsisthesumofallthefrequencies,f.
interpretation,histogram
8.ReferringtothehistogramfromTable2-3,ifalltheticketspurchasedwereused,howmanyguestsattendedtheluncheon?
Thetotalnumberofguestsis
9.AprofessorofeconomicsatasmallTexasuniversitywantedtodeterminewhatyearinschoolstudentsweretakinghistougheconomicscourse.Shownbelowisapiechartoftheresults.Whatpercentageoftheclasstookthecoursepriortoreachingtheirsenioryear?
a）14%
b）44%
c）54%
d）86%
interpretation,piechart
10.Whenpolygonsorhistogramsareconstructed,whichaxismustshowthetruezeroor"
origin"
?
a）Thehorizontalaxis.
b）Theverticalaxis.
c）Boththehorizontalandverticalaxes.
d）Neitherthehorizontalnortheverticalaxis.
polygon,histogram
11.Whenconstructingcharts,thefollowingisplottedattheclassmidpoints:
a）frequencyhistograms.
b）percentagepolygons.
c）cumulativerelativefrequencyogives.
d）Alloftheabove.
percentagepolygon
TABLE2-4
Asurveywasconductedtodeterminehowpeopleratedthequalityofprogrammingavailableontelevision.Respondentswereaskedtoratetheoverallqualityfrom0（noqualityatall）to100（extremelygoodquality）.Thestem-and-leafdisplayofthedataisshownbelow.
StemLeaves
324
403478999
50112345
612566
701
8
92
12.ReferringtoTable2-4,whatpercentageoftherespondentsratedoveralltelevisionqualitywitharatingof80orabove?
a）0
b）4
c）96
d）100
stem-and-leafdisplay,interpretation
13.ReferringtoTable2-4,whatpercentageoftherespondentsratedoveralltelevisionqualitywitharatingof50orbelow?
a）11
c）44
d）56
14.ReferringtoTable2-4,whatpercentageoftherespondentsratedoveralltelevisionqualitywitharatingbetween50and75?
TABLE2-5
Thefollowingarethedurationsinminutesofasampleoflong-distancephonecallsmadewithinthecontinentalUnitedStatesreportedbyonelong-distancecarrier.
Relative
Time（inMinutes）Frequency
0butlessthan50.37
5butlessthan100.22
10butlessthan150.15
15butlessthan200.10
20butlessthan250.07
25butlessthan300.07
30ormore0.02
15.ReferringtoTable2-5,whatisthewidthofeachclass?
a）1minute
b）5minutes
c）2%
d）100%
classinterval,relativefrequencydistribution
16.ReferringtoTable2-5,if1,000callswererandomlysampled,howmanycallslastedunder10minutes?
a）220
b）370
c）410
d）590
Moderate
relativefrequencydistribution,interpretation
17.ReferringtoTable2-5,if100callswererandomlysampled,howmanycallslasted15minutesorlonger?
a）10
b）14
c）26
d）74
18.ReferringtoTable2-5,if10callslasted30minutesormore,howmanycallslastedlessthan5minutes?
b）185
c）295
d）500
19.ReferringtoTable2-5,whatisthecumulativerelativefrequencyforthepercentageofcallsthatlastedunder20minutes?
a）0.10
b）0.59
c）0.76
d）0.84
cumulativerelativefrequency
20.ReferringtoTable2-5,whatisthecumulativerelativefrequencyforthepercentageofcallsthatlasted10minutesormore?
a）0.16
b）0.24
c）0.41
d）0.90
21.ReferringtoTable2-5,if100callswererandomlysampled,_______ofthemwouldhavelastedatleast15minutesbutlessthan20minutes
b）0.16
c）10
d）16
22.ReferringtoTable2-5,if100callsweresampled,_______ofthemwouldhavelastedlessthan15minutes.
a）26
b）74
d）Noneoftheabove.
23.ReferringtoTable2-5,if100callsweresampled,_______ofthemwouldhavelasted20minutesormore.
b）16
c）74
24.ReferringtoTable2-5,if100callsweresampled,_______ofthemwouldhavelastedlessthan5minutesoratleast30minutesormore.
a）35
b）37
c）39
Difficult
25.Whenstudyingthesimultaneousresponsestotwocategoricalquestions,weshouldsetupa
b）frequencydistributiontable.
c）cumulativepercentagedistributiontable.
d）histogram.
contingencytable
26.Dataon1,500students’heightwerecollectedatalargeruniversityintheEastCoast.Whichofthefollowingisthebestchartforpresentingtheinformation?
a）Apiechart.
b）AParetodiagram.
c）Ascatterplot.
d）Ahistogram.
choiceofchart,histogram
27.Dataonthenumberofpart-timehoursstudentsatapublicuniversityworkedinaweekwerecollected.Whichofthefollowingisthebestchartforpresentingtheinformation?
c）Apercentagetable.
d）Apercentagepolygon.
choiceofchart,percentagepolygon
28.Dataonthenumberofcredithoursof20,000studentsatapublicuniversityenrolledinaSpringsemesterwerecollected.Whichofthefollowingisthebestforpresentingtheinformation?
c）Astem-and-leafdisplay.
d）Acontingencytable.
choiceofchart,stem-and-leaf
29.Asurveyof150executiveswereaskedwhattheythinkisthemostcommonmistakecandidatesmakeduringjobinterviews.Sixdifferentmistakesweregiven.Whichofthefollowingisthebestforpresentingtheinformation?
a）Abarchart.
b）Ahistogram
Ea
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