Test Bank for Business Statistics 2nd Edition( Robert Donnelly Jr. , 2014) Chapter 1-18 Complete Guide A+

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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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