iongBlack
Testbank
to accompany
g
Business analytics and statistics
g g g
1st editiong
by Blac g
k et al.
g g
©gJohngWileyg&gSonsgAustralia,gLtdg2019
mynursytest.store
,DOWNLOADgTHEgTestgBankgforgBusinessgAnalyticsgandgStatisticsg1stgEdit
iongBlack
Chapterg2:gDatagvisualisation
Chapter 2 Da g g
ta visualisation
g
True/FalsegQuestions
1. Dataggroupedgintogintervalsgwithgthegnumbergofgitemsgingeachggroupglistedgisgcalledgagfrequenc
ygdistribution.
*a.gTrue
b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gEasy
2. Thegwidthgofgagclassgintervalgingagfrequencygdistributiongwillgbegapproximatelygequalgtogth
egrangegdividedgbygthegmidpointgofgthegmiddlegclass.
a. True
*b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gMedium
3. Agrulegthatgmustgalwaysgbegfollowedgingconstructinggfrequencygdistributionsgisgthatgeachgdat
agpointgcangonlygfallgintogonegclass.
*a.gTrue
b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gEasy
4. Thegmidpointgofgthegclassgintervalg(10,g12]gisg11.
*a.gTrue
b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gEasy
©gJohngWileygandgSonsgAustralia,gLtdg201 2.2
9
mynursytest.store
, DOWNLOADgTHEgTestgBankgforgBusinessgAnalyticsgandgStatisticsg1stgEdit
iongBlack
TestbankgtogaccompanygBusinessganalyticsgandgstatisticsg1egbygBlackgetgal.
5. Thegmidpointgofgthegclassgintervalg(6,g9]gisg3.
a. True
*b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gEasy
6. Thegrangegofgdatagingthegfollowinggfrequencygdistributiongisg10.
Classginterval Frequency
(10,g20] 15
(20,g30] 25
(30,g40] 10
a. True
*b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gEasy
7. Agfinancialganalystghasgrandomlygselectedg200gcompaniesgfromgthosegtradedgongthegAustralia
ngSecuritiesgExchange.gAtgthegendgofgeachgtradinggday,gtheganalystgrecordsgthegclosinggpricegfo
rgeachgofgtheg200gcompanies.gTheseg200gmeasurementsgaregangexamplegofggroupedgdata.
a. True
*b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gEasy
8. Ifgthegindividualgclassgfrequencygisgdividedgbygthegtotalgfrequency,gthegresultgisgthegrelativ
egfrequency.
*a.gTrue
b.gFalse
GeneralgFeedback:
Sectiong2.1,gDifficulty:gMedium
©gJohngWileygandgSonsgAustralia,gLtdg201 2.3
9
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