STATISTICS QUIZ 1 QUESTIONS WITH
COMPLETE ANSWERS
In ssan ssobservational ssstudy... ss- ssAnswer ssresearchers sssimply ssobserve
sscharacteristics ssand sstake ssmeasurements, ssas ssin ssa sssample sssurvey
In ssa ssdesigned ssexperiment... ss- ssAnswer ssresearchers ssimpose sstreatments ssand
sscontrols ssand ssthen ssobserve sscharacteristics ssand sstake ssmeasurements.
Data ssfrom ssa sssample ssof sscitizens ssof ssa sscertain sscountry ssyielded ssthe ssfollowing
ssestimates ssof ssaverage ssTV ssviewing sstime ssper ssmonth ssfor ssall ssthe sscitizens.
ssThe sstimes ssare ssin sshours ssand ssminutes. ss
Is ssthe ssstudy ssdescriptive ssor ssinferential? ss- ssAnswer ssInferential, ssbecause ssthe
ssstatistics ssare ssused ssto ssmake ssan ssinference ssabout ssthe sspopulation
Is ssthe ssfollowing ssstudy ssdescriptive ssor ssinferential?
In ssa ssstatistical ssmagazine, ssaverage ssprofessional ssathletes' sssalaries ssin ssthree
sssports sswere sscompiled ssand sscompared ssfor ssthe ssyears ss1993 ssand ss2003. ss-
ssAnswer ssDescriptive, ssbecause ssthe ssstatistics ssare ssa sssummary ssof ssthe ssaverage
sssalaries ssof ssprofessional ssathletes ssin ssthree sssports
A ssrecent ssarticle sspostulated ssthat sssupport ssfor ssa sscertain ssscientist's sstheories
ssincreases sswith sslevel ssof sseducation.
The sstable ssshown ssto ssthe ssright ssprovides sspercentages ssof ssa sscertain sscountry's
ssadults, ssby sseducational sslevel, sswho ssbelieve ssthat ssevolution ssis ssa ssscientific
sstheory sswell sssupported ssby ssevidence. ssComplete ssparts ssa ssand ssb.
Education
Percentage
Postgraduate sseducation
65%
College ssgraduate
52%
Some sscollege sseducation
32%
High ssschool ssor ssless
20%
COMPLETE ANSWERS
In ssan ssobservational ssstudy... ss- ssAnswer ssresearchers sssimply ssobserve
sscharacteristics ssand sstake ssmeasurements, ssas ssin ssa sssample sssurvey
In ssa ssdesigned ssexperiment... ss- ssAnswer ssresearchers ssimpose sstreatments ssand
sscontrols ssand ssthen ssobserve sscharacteristics ssand sstake ssmeasurements.
Data ssfrom ssa sssample ssof sscitizens ssof ssa sscertain sscountry ssyielded ssthe ssfollowing
ssestimates ssof ssaverage ssTV ssviewing sstime ssper ssmonth ssfor ssall ssthe sscitizens.
ssThe sstimes ssare ssin sshours ssand ssminutes. ss
Is ssthe ssstudy ssdescriptive ssor ssinferential? ss- ssAnswer ssInferential, ssbecause ssthe
ssstatistics ssare ssused ssto ssmake ssan ssinference ssabout ssthe sspopulation
Is ssthe ssfollowing ssstudy ssdescriptive ssor ssinferential?
In ssa ssstatistical ssmagazine, ssaverage ssprofessional ssathletes' sssalaries ssin ssthree
sssports sswere sscompiled ssand sscompared ssfor ssthe ssyears ss1993 ssand ss2003. ss-
ssAnswer ssDescriptive, ssbecause ssthe ssstatistics ssare ssa sssummary ssof ssthe ssaverage
sssalaries ssof ssprofessional ssathletes ssin ssthree sssports
A ssrecent ssarticle sspostulated ssthat sssupport ssfor ssa sscertain ssscientist's sstheories
ssincreases sswith sslevel ssof sseducation.
The sstable ssshown ssto ssthe ssright ssprovides sspercentages ssof ssa sscertain sscountry's
ssadults, ssby sseducational sslevel, sswho ssbelieve ssthat ssevolution ssis ssa ssscientific
sstheory sswell sssupported ssby ssevidence. ssComplete ssparts ssa ssand ssb.
Education
Percentage
Postgraduate sseducation
65%
College ssgraduate
52%
Some sscollege sseducation
32%
High ssschool ssor ssless
20%
