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Chapter 02 g
1. Agfrequencygdistributiongforgqualitativegdataggroupsgthesegdatagintogclassesgcalledgintervalsga
ndgrecordsgthegtotalgnumbergofgobservationsgingeachgclass.
True False
2. Thegrelativegfrequencygofgagcategorygisgcalculatedgbygdividinggthegcategory'sgfrequencygbygthegtot
algnumbergofgobservations.
True False
3. Thegpercentgfrequencygofgagcategorygequalsgthegfrequencygofgthegcategorygmultipliedgbyg100%.
True False
4. Agpiegchartgisgagsegmentedgcirclegthatgportraysgthegcategoriesgandgrelativegsizesgofgso
megquantitativegvariable.
True False
5. Agbargchartgdepictsgthegfrequencygorgrelativegfrequencygofgeachgcategorygofgqualitativegdatagasga
bargrisinggverticallygfromgtheghorizontalgaxis.gItgisgalsogacceptablegforgthegbargtogextendghorizont
g
allygfromgthegverticalgaxis.
True False
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6. Agbargchartgmaygbegdisplayedghorizontally.
True False
7. Togapproximategthegwidthgofgagclassgingthegcreationgofgagbargchart,gwegmaygusegthisgformula:
True False
8. Forgquantitativegdata,gagrelativegfrequencygdistributiongidentifiesgthegproportiongofgobservationsgth
atgfallgintogeachgclass.
True False
9. Forgquantitativegdata,gagcumulativegrelativegfrequencygdistributiongrecordsgthegproportiong(fractio
n)gofgvaluesgthatgfallgbelowgthegupperglimitgofgeachgclass.
True False
10. Aghistogramgisgagseriesgofgrectanglesgwheregthegwidthgandgheightgofgeachgrectanglegrepresentgt
hegfrequencyg(orgrelativegfrequency)gandgthegwidthgofgthegclass,grespectively.
True False
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11. Agpolygongconnectsgagseriesgofgneighboringgpointsgwheregeachgpointgrepresentsgthegmidpointgof
a particulargclassgandgitsgassociatedgfrequencygorgrelativegfrequency.
g g
True False
12. Angogivegisgaggraphgthatgplotsgthegcumulativegfrequencyg(orgthegcumulativegrelativegfrequency)g
ofgeachgclassgabovegtheglowerglimitgofgthegcorrespondinggclass.
True False
13. Agstem-and-
leafgdiagramgisgusefulgingthatgitggivesgangoverallgpicturegofgwheregquantitativegdatagaregcenteredg
andghowgthegdatagaregdispersedgfromgthegcenter.
True False
14. Agscatterplotgisgaggraphicalgtoolgthatghelpsgdeterminegwhethergorgnotgtwogquantitativegvariablesga
regrelated.
True False
15. Whengconstructinggagscatterplotgforgtwogquantitativegvariables,gwegusuallygrefergtogonegvariablegas
xgandganothergonegasgy.gTypically,gweggraphgxgongthegverticalgaxisgandgygongtheghorizontalgaxis.
True False
16. Whengconstructinggagpiegchart,gonlygagfew,gthegmostgfrequent,gcategoriesgmustgbegincludedgingt
hegpie.
True False
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17. Whengsummarizinggquantitativegdatagitgisgalwaysgbettergtoghavegupgtog30gclassesgingagfrequen
cygdistribution.
True False
18. Scatterplotgisgaggraphicalgtoolgthatgisgfocusedgongdescribinggonegvariable.
True False
19. Frequencygdistributionsgmaygbegusedgtogdescribegwhichgofgthegfollowinggtypesgofgdata?
A. Nominalgandgordinalgdatagonly
B. Nominalgandgintervalgdatagonly
C. Nominal,gordinal,gandgintervalgdatagonly
D. Nominal,gordinal,ginterval,gandgratiogdata
20. Ingordergtogsummarizegqualitativegdata,gagusefulgtoolgisgag .
A. histogram
B. frequencygdistribution
C. stem-and-leafgdiagram
D. Allgofgthegabove
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Chapter 02 g
1. Agfrequencygdistributiongforgqualitativegdataggroupsgthesegdatagintogclassesgcalledgintervalsga
ndgrecordsgthegtotalgnumbergofgobservationsgingeachgclass.
True False
2. Thegrelativegfrequencygofgagcategorygisgcalculatedgbygdividinggthegcategory'sgfrequencygbygthegtot
algnumbergofgobservations.
True False
3. Thegpercentgfrequencygofgagcategorygequalsgthegfrequencygofgthegcategorygmultipliedgbyg100%.
True False
4. Agpiegchartgisgagsegmentedgcirclegthatgportraysgthegcategoriesgandgrelativegsizesgofgso
megquantitativegvariable.
True False
5. Agbargchartgdepictsgthegfrequencygorgrelativegfrequencygofgeachgcategorygofgqualitativegdatagasga
bargrisinggverticallygfromgtheghorizontalgaxis.gItgisgalsogacceptablegforgthegbargtogextendghorizont
g
allygfromgthegverticalgaxis.
True False
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6. Agbargchartgmaygbegdisplayedghorizontally.
True False
7. Togapproximategthegwidthgofgagclassgingthegcreationgofgagbargchart,gwegmaygusegthisgformula:
True False
8. Forgquantitativegdata,gagrelativegfrequencygdistributiongidentifiesgthegproportiongofgobservationsgth
atgfallgintogeachgclass.
True False
9. Forgquantitativegdata,gagcumulativegrelativegfrequencygdistributiongrecordsgthegproportiong(fractio
n)gofgvaluesgthatgfallgbelowgthegupperglimitgofgeachgclass.
True False
10. Aghistogramgisgagseriesgofgrectanglesgwheregthegwidthgandgheightgofgeachgrectanglegrepresentgt
hegfrequencyg(orgrelativegfrequency)gandgthegwidthgofgthegclass,grespectively.
True False
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11. Agpolygongconnectsgagseriesgofgneighboringgpointsgwheregeachgpointgrepresentsgthegmidpointgof
a particulargclassgandgitsgassociatedgfrequencygorgrelativegfrequency.
g g
True False
12. Angogivegisgaggraphgthatgplotsgthegcumulativegfrequencyg(orgthegcumulativegrelativegfrequency)g
ofgeachgclassgabovegtheglowerglimitgofgthegcorrespondinggclass.
True False
13. Agstem-and-
leafgdiagramgisgusefulgingthatgitggivesgangoverallgpicturegofgwheregquantitativegdatagaregcenteredg
andghowgthegdatagaregdispersedgfromgthegcenter.
True False
14. Agscatterplotgisgaggraphicalgtoolgthatghelpsgdeterminegwhethergorgnotgtwogquantitativegvariablesga
regrelated.
True False
15. Whengconstructinggagscatterplotgforgtwogquantitativegvariables,gwegusuallygrefergtogonegvariablegas
xgandganothergonegasgy.gTypically,gweggraphgxgongthegverticalgaxisgandgygongtheghorizontalgaxis.
True False
16. Whengconstructinggagpiegchart,gonlygagfew,gthegmostgfrequent,gcategoriesgmustgbegincludedgingt
hegpie.
True False
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17. Whengsummarizinggquantitativegdatagitgisgalwaysgbettergtoghavegupgtog30gclassesgingagfrequen
cygdistribution.
True False
18. Scatterplotgisgaggraphicalgtoolgthatgisgfocusedgongdescribinggonegvariable.
True False
19. Frequencygdistributionsgmaygbegusedgtogdescribegwhichgofgthegfollowinggtypesgofgdata?
A. Nominalgandgordinalgdatagonly
B. Nominalgandgintervalgdatagonly
C. Nominal,gordinal,gandgintervalgdatagonly
D. Nominal,gordinal,ginterval,gandgratiogdata
20. Ingordergtogsummarizegqualitativegdata,gagusefulgtoolgisgag .
A. histogram
B. frequencygdistribution
C. stem-and-leafgdiagram
D. Allgofgthegabove
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