Test Bank for Business Statistics Communicating
with Numbers 2nd Edition
Jaggia Chapter 02
1. Aifrequencyidistributioniforiqualitativeidataigroupsitheseidataiintoiclassesic
allediintervalsiandirecordsitheitotalinumberiofiobservationsiinieachiclass.
True False
2. Theirelativeifrequencyiofiiaicategoryiisicalculatedibyidividingitheicategory'sifreq
uencyibyitheitotalinumberiofiobservations.
True False
3. Theipercentifrequencyiofiaicategoryiequalsitheifrequencyiofiitheicategoryimultipli
edibyi100%.
True False
4. Aipieichartiisiaisegmentedicircleithatiportraysitheicategoriesiandirelat
iveisizesiofisomeiquantitativeivariable.
True False
5. Aibarichartidepictsitheifrequencyiorirelativeifrequencyiofieachicategoryiofiquali
tativeidataiasiaibaririsingiverticallyifromitheihorizontaliaxis.iItiisialsoiacceptableif
oritheibaritoiextendihorizontallyifromitheiverticaliaxis.
True False
,6. Aibarichartimayibeidisplayedihorizontally.
True False
7. Toiapproximateitheiwidthiofiiaiclassiinitheicreationiofiiaibarichart,iweimayiuseithisiformula:
True False
8. Foriquantitativeidata,iairelativeifrequencyidistributioniidentifiesitheiproportioniofiiobservationsithatifalliint
oieachiclass.
True False
9. Foriquantitativeidata,iaicumulativeirelativeifrequencyidistributionirecordsitheiproportioni(fraction)iofival
uesithatifallibelowitheiupperilimitiofieachiclass.
True False
10. Aihistogramiisiaiseriesiofirectanglesiwhereitheiwidthiandiheightiofieachirectangleirepresentitheifrequen
cyi(orirelativeifrequency)ianditheiwidthiofitheiclass,irespectively.
True False
,11. Aipolygoniconnectsiaiseriesiofineighboringipointsiwhereieachipointirepresentsitheimidpointiofiaiparticul
ariclassiandiitsiassociatedifrequencyiorirelativeifrequency.
True False
12. Aniogiveiisiaigraphithatiplotsitheicumulativeifrequencyi(oritheicumulativeirelativeifrequency)iofieachicl
assiaboveitheilowerilimitiofitheicorrespondingiclass.
True False
13. Aistem-and-
leafidiagramiisiusefuliinithatiitigivesianioverallipictureiofiwhereiquantitativeidataiareicenterediandihowith
eidataiareidispersedifromitheicenter.
True False
14. Aiscatterplotiisiaigraphicalitoolithatihelpsidetermineiwhetheriorinotitwoiquantitativeivariablesiareirelated.
True False
15. Wheniconstructingiaiscatterplotiforitwoiquantitativeivariables,iweiusuallyireferitoioneivariableias
x and another one as y. Typically, we graph x on the vertical axis and y on the horizontal axis.
i i i i i i i i i i i i i i i i i i i
True False
16. Wheniconstructingiaipieichart,ionlyiaifew,itheimostifrequent,icategoriesimustibeiincludediinitheipie.
True False
, 17. Whenisummarizingiquantitativeidataiitiisialwaysibetteritoihaveiupitoi30iclassesiiniaifrequencyidistributi
on.
True False
18. Scatterplotiisiaigraphicalitoolithatiisifocusedionidescribingioneivariable.
True False
19. Frequencyidistributionsimayibeiuseditoidescribeiwhichiofiitheifollowingitypesiofiidata?
A. Nominaliandiordinalidataionly
B. Nominaliandiintervalidataionly
C. Nominal,iordinal,iandiintervalidataionly
D. Nominal,iordinal,iinterval,iandiratioidata
20. Iniorderitoisummarizeiqualitativeidata,iaiusefulitooliisiai .
A. histogram
B. frequencyidistribution
C. stem-and-leafiidiagram
D. Alliofiitheiabove
with Numbers 2nd Edition
Jaggia Chapter 02
1. Aifrequencyidistributioniforiqualitativeidataigroupsitheseidataiintoiclassesic
allediintervalsiandirecordsitheitotalinumberiofiobservationsiinieachiclass.
True False
2. Theirelativeifrequencyiofiiaicategoryiisicalculatedibyidividingitheicategory'sifreq
uencyibyitheitotalinumberiofiobservations.
True False
3. Theipercentifrequencyiofiaicategoryiequalsitheifrequencyiofiitheicategoryimultipli
edibyi100%.
True False
4. Aipieichartiisiaisegmentedicircleithatiportraysitheicategoriesiandirelat
iveisizesiofisomeiquantitativeivariable.
True False
5. Aibarichartidepictsitheifrequencyiorirelativeifrequencyiofieachicategoryiofiquali
tativeidataiasiaibaririsingiverticallyifromitheihorizontaliaxis.iItiisialsoiacceptableif
oritheibaritoiextendihorizontallyifromitheiverticaliaxis.
True False
,6. Aibarichartimayibeidisplayedihorizontally.
True False
7. Toiapproximateitheiwidthiofiiaiclassiinitheicreationiofiiaibarichart,iweimayiuseithisiformula:
True False
8. Foriquantitativeidata,iairelativeifrequencyidistributioniidentifiesitheiproportioniofiiobservationsithatifalliint
oieachiclass.
True False
9. Foriquantitativeidata,iaicumulativeirelativeifrequencyidistributionirecordsitheiproportioni(fraction)iofival
uesithatifallibelowitheiupperilimitiofieachiclass.
True False
10. Aihistogramiisiaiseriesiofirectanglesiwhereitheiwidthiandiheightiofieachirectangleirepresentitheifrequen
cyi(orirelativeifrequency)ianditheiwidthiofitheiclass,irespectively.
True False
,11. Aipolygoniconnectsiaiseriesiofineighboringipointsiwhereieachipointirepresentsitheimidpointiofiaiparticul
ariclassiandiitsiassociatedifrequencyiorirelativeifrequency.
True False
12. Aniogiveiisiaigraphithatiplotsitheicumulativeifrequencyi(oritheicumulativeirelativeifrequency)iofieachicl
assiaboveitheilowerilimitiofitheicorrespondingiclass.
True False
13. Aistem-and-
leafidiagramiisiusefuliinithatiitigivesianioverallipictureiofiwhereiquantitativeidataiareicenterediandihowith
eidataiareidispersedifromitheicenter.
True False
14. Aiscatterplotiisiaigraphicalitoolithatihelpsidetermineiwhetheriorinotitwoiquantitativeivariablesiareirelated.
True False
15. Wheniconstructingiaiscatterplotiforitwoiquantitativeivariables,iweiusuallyireferitoioneivariableias
x and another one as y. Typically, we graph x on the vertical axis and y on the horizontal axis.
i i i i i i i i i i i i i i i i i i i
True False
16. Wheniconstructingiaipieichart,ionlyiaifew,itheimostifrequent,icategoriesimustibeiincludediinitheipie.
True False
, 17. Whenisummarizingiquantitativeidataiitiisialwaysibetteritoihaveiupitoi30iclassesiiniaifrequencyidistributi
on.
True False
18. Scatterplotiisiaigraphicalitoolithatiisifocusedionidescribingioneivariable.
True False
19. Frequencyidistributionsimayibeiuseditoidescribeiwhichiofiitheifollowingitypesiofiidata?
A. Nominaliandiordinalidataionly
B. Nominaliandiintervalidataionly
C. Nominal,iordinal,iandiintervalidataionly
D. Nominal,iordinal,iinterval,iandiratioidata
20. Iniorderitoisummarizeiqualitativeidata,iaiusefulitooliisiai .
A. histogram
B. frequencyidistribution
C. stem-and-leafiidiagram
D. Alliofiitheiabove
