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t t t t t t t t t t t
es 3rd Edition Nolan
t t t
1. At istatdatatpointtthatthastnottyettbeentmanipulated.
A) frequencytdistribution
B) rawtscore
C) normaltdistribution
D) positivelytskewedtdistribution
2. Whytistittsometimesteasierttotusetatfrequencyttablettotinterprettdatatthanttotexaminetatdistri
butiontoftrawtscores?
A) Rawtscorestdotnottrepresenttthetdata.
B) Atfrequencyttablettransformstthetrawtscorestbytshowingtthetmeans.
C) Rawtscorestaretnottbasedtontthetsample.
D) Frequencyttablestdisplaytpatterns,torganizingtthetdatatbytfrequencytoftscores.
3. Totcalculatetatpercentagetintatfrequencytdistribution:
A) dividetthetnumbertoftparticipantstintatgrouptbytthettotaltnumbertoftparticipantstandtmult
iplytbyt100.
B) dividetthettotaltnumbertoftparticipantstbytthetnumbertoftgroupstandtmultiplytbyt100.
C) multiplyteachtrawtscoretbytatvaluetoft100tandtdividetbytthetnumbertoftgroups.
D) dividetthettotaltnumbertoftparticipantstbytthetnumbertoftparticipantstinteachtgrouptandt
dividetbyt100.
4. Ittwouldtbetpreferablettothavetatgroupedtfrequencyttabletrathertthantatfrequencyttabletwhe
ntdata:
A) aretatsmalltsettoftmostlytwholetnumbers.
B) includetmanytrawtscorestandtonlytonetgroup.
C) gottotmanytdecimaltplacestandtcovertatlargetrange.
D) containtmanytextremetobservations.
5. Whattistonetimportanttreasontfortlookingtattvisualtdescriptionstoftdatatsuchtastfreq
uencyttablestandthistograms?
A) Thetpatternstrevealedtintthetdatatmaytleadttotmoretspecifictresearchtquestions.
B) Visualtdepictionstoftdatataretnecessarytfortpublishingtresearch.
C) Rawtdatataretnottusefultunlessttransformed.
D) Graphstandttablestshowtwhattkindtoftstatisticaltteststhavetbeentperformed.
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t t t t t t t t t t t
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t t t
6. At istatlinetgraphtwithtthetx-axistandty-
axistrepresentingtmidpointstoftintervalstandtfrequencies,trespectively.
A) frequencytpolygon
B) frequencytdistribution
C) histogram
D) skewedtdistribution
7. Atnormaltdistributiontist ,twhiletatskewedtdistributiontist .
A) nonsymmetric;tsymmetric
B) symmetric;tnonsymmetric
C) unimodal;tsymmetric
D) symmetric;tunimodal
8. Whentlookingtattatdistributiontoftdatatwithtatpossibletextremetobservation,tittistimp
ortantttotkeeptintmindtthattthetextremetobservationtmayt thetdata.
A) skew
B) floor
C) restrict
D) expand
9. Atpositivelytskewedtdistributionthastatlongttailttotthet
oftthetdistribution,twhiletatnegativetskewthastat
longttailttotthet oftthetdistribution.
A) left;tright
B) right;tleft
C) right;tright
D) left;tleft
10. Anteasytquiz,tonetontwhichtalmosttalltstudentstobtaintfulltcredit,tistlikelyttotdem
onstratetat .
A) positivetskew
B) negativetskew
C) floorteffect
D) normaltdistribution
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t t t
Answer Key t
1. B
2. D
3. A
4. C
5. A
6. A
7. B
8. A
9. B
10. B
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Usetthetfollowingttotanswertquestionst1-2:
ThisttabletdepictstthetaveragetSATtscorestfortenteringtfreshmentintthetyeart1995tatt36tNorthtCarolinatc
olleges.
Table:tNorthtCarolinatSAT
825 922 870 1121
990 1230 1302 926
1054 845 826 956
840 923 818 867
600 1030 831 935
890 879 1005 842
780 757 1002 774
915 921 1071 921
915 848 915 813
1. (Table:tNorthtCarolinatSAT)tUsetthetdatatsetttotcreatetathistogram.tBasedtontthethisto
gram,tdescribetthetskewtoftthetdata.
2. (Table:tNorthtCarolinatSAT)tUsetthetdatatprovidedttotcreatetatgroupedtfrequencyttabletfortt
hetNorthtCarolinatSATtscores.
Usetthetfollowingttotanswertquestiont3:
Table:tFrequencytTable
X Frequency
7 1
6 4
5 1
4 15
3 2
2 1
1 21
3. (Table:tFrequencytTable)tUsetthetinformationtintthettablettotdeterminetthetpercentagestfort
eachtscore.tWhattinformationtdotyoutneedtintorderttotcalculatetthetpercentages?
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t t t t t t t t t t t
es 3rd Edition Nolan
t t t
1. At istatdatatpointtthatthastnottyettbeentmanipulated.
A) frequencytdistribution
B) rawtscore
C) normaltdistribution
D) positivelytskewedtdistribution
2. Whytistittsometimesteasierttotusetatfrequencyttablettotinterprettdatatthanttotexaminetatdistri
butiontoftrawtscores?
A) Rawtscorestdotnottrepresenttthetdata.
B) Atfrequencyttablettransformstthetrawtscorestbytshowingtthetmeans.
C) Rawtscorestaretnottbasedtontthetsample.
D) Frequencyttablestdisplaytpatterns,torganizingtthetdatatbytfrequencytoftscores.
3. Totcalculatetatpercentagetintatfrequencytdistribution:
A) dividetthetnumbertoftparticipantstintatgrouptbytthettotaltnumbertoftparticipantstandtmult
iplytbyt100.
B) dividetthettotaltnumbertoftparticipantstbytthetnumbertoftgroupstandtmultiplytbyt100.
C) multiplyteachtrawtscoretbytatvaluetoft100tandtdividetbytthetnumbertoftgroups.
D) dividetthettotaltnumbertoftparticipantstbytthetnumbertoftparticipantstinteachtgrouptandt
dividetbyt100.
4. Ittwouldtbetpreferablettothavetatgroupedtfrequencyttabletrathertthantatfrequencyttabletwhe
ntdata:
A) aretatsmalltsettoftmostlytwholetnumbers.
B) includetmanytrawtscorestandtonlytonetgroup.
C) gottotmanytdecimaltplacestandtcovertatlargetrange.
D) containtmanytextremetobservations.
5. Whattistonetimportanttreasontfortlookingtattvisualtdescriptionstoftdatatsuchtastfreq
uencyttablestandthistograms?
A) Thetpatternstrevealedtintthetdatatmaytleadttotmoretspecifictresearchtquestions.
B) Visualtdepictionstoftdatataretnecessarytfortpublishingtresearch.
C) Rawtdatataretnottusefultunlessttransformed.
D) Graphstandttablestshowtwhattkindtoftstatisticaltteststhavetbeentperformed.
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t t t t t t t t t t t
es 3rd Edition Nolan
t t t
6. At istatlinetgraphtwithtthetx-axistandty-
axistrepresentingtmidpointstoftintervalstandtfrequencies,trespectively.
A) frequencytpolygon
B) frequencytdistribution
C) histogram
D) skewedtdistribution
7. Atnormaltdistributiontist ,twhiletatskewedtdistributiontist .
A) nonsymmetric;tsymmetric
B) symmetric;tnonsymmetric
C) unimodal;tsymmetric
D) symmetric;tunimodal
8. Whentlookingtattatdistributiontoftdatatwithtatpossibletextremetobservation,tittistimp
ortantttotkeeptintmindtthattthetextremetobservationtmayt thetdata.
A) skew
B) floor
C) restrict
D) expand
9. Atpositivelytskewedtdistributionthastatlongttailttotthet
oftthetdistribution,twhiletatnegativetskewthastat
longttailttotthet oftthetdistribution.
A) left;tright
B) right;tleft
C) right;tright
D) left;tleft
10. Anteasytquiz,tonetontwhichtalmosttalltstudentstobtaintfulltcredit,tistlikelyttotdem
onstratetat .
A) positivetskew
B) negativetskew
C) floorteffect
D) normaltdistribution
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t t t t t t t t t t t
es 3rd Edition Nolan
t t t
Answer Key t
1. B
2. D
3. A
4. C
5. A
6. A
7. B
8. A
9. B
10. B
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t t t t t t t t t t t
es 3rd Edition Nolan t t t
Usetthetfollowingttotanswertquestionst1-2:
ThisttabletdepictstthetaveragetSATtscorestfortenteringtfreshmentintthetyeart1995tatt36tNorthtCarolinatc
olleges.
Table:tNorthtCarolinatSAT
825 922 870 1121
990 1230 1302 926
1054 845 826 956
840 923 818 867
600 1030 831 935
890 879 1005 842
780 757 1002 774
915 921 1071 921
915 848 915 813
1. (Table:tNorthtCarolinatSAT)tUsetthetdatatsetttotcreatetathistogram.tBasedtontthethisto
gram,tdescribetthetskewtoftthetdata.
2. (Table:tNorthtCarolinatSAT)tUsetthetdatatprovidedttotcreatetatgroupedtfrequencyttabletfortt
hetNorthtCarolinatSATtscores.
Usetthetfollowingttotanswertquestiont3:
Table:tFrequencytTable
X Frequency
7 1
6 4
5 1
4 15
3 2
2 1
1 21
3. (Table:tFrequencytTable)tUsetthetinformationtintthettablettotdeterminetthetpercentagestfort
eachtscore.tWhattinformationtdotyoutneedtintorderttotcalculatetthetpercentages?
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