WGU STATISTICS TEST QUESTIONS WITH
ANSWERS 2024 - 2025
In,a,standard,52-
card,deck,,where,each,card,is,assigned,a,numeric,value,,the,mean,of,the,52,cards,is,7.0,with,a,standard,de
viation,of,3.742.,To,test,if,a,representative,sample,can,be,attained,,the,deck,is,shuffled,and,13,cards,are,ra
ndomly,drawn,,one,at,a,time.,Each,card,is,recorded,and,then,returned,randomly,to,the,deck,before,the,ne
xt,card,is,drawn.,This,process,of,drawing,13,random,cards,is,repeated,a,total,of,20,times,,and,the,mean,an
d,standard,deviation,of,each,round,is,computed.,
,
Which,type,of,sampling,is,this,an,example,of?
Randomization,
Multiple,comparison,
Matched,pairs,
Bootstrap,,ANS,-Bootstrap
A,study,is,done,to,determine,if,the,color,of,an,apple,affects,the,purchase,rate,by,consumers,at,a,grocery,st
ore.,Purchase,counts,for,three,colors,of,apples,are,collected.,
Which,technique,should,be,used,to,determine,if,there,is,a,difference,in,purchase,rate,by,color?
Rank-based,
Randomization,
t-test,
ANOVA,,ANS,-ANOVA
A,hospital,network,collects,the,amount,of,time,it,takes,doctors,to,see,patients.,
Which,two,techniques,are,appropriate,to,compare,the,mean,times,of,two,subsets,within,this,set,of,doctor
s?,
,Choose,2,answers,
,
ANOVA,
t-test,
Logistic,regression,
Principal,component,analysis,,ANS,-ANOVA
t-test
A,data,analyst,needs,to,determine,whether,antioxidants,in,blackberries,can,reduce,age-
related,cognitive,decline.,Twenty-
five,adults,between,65,and,80,are,selected,to,eat,blackberries,for,six,months,and,be,retested.,The,original,
scores,are,compared,with,the,second,scores,to,determine,whether,there,was,decline.,
What,is,the,appropriate,model,to,test,the,hypothesis?
z,test,
ANOVA,
Linear,regression,
Two-sample,t-test,,ANS,-Two-sample,t-test
Which,assumption,does,a,data,analyst,have,to,make,when,performing,ANOVA,on,a,dataset?
There,are,just,two,parameters,that,are,being,estimated.,
The,error,terms,follow,a,normal,probability,distribution.,
The,parameters,are,additive.,
The,explanatory,variable,is,continuous.,,ANS,-The,error,terms,follow,a,normal,probability,distribution.
Which,two,assumptions,are,made,when,the,linear,regression,model,is,used?,
,Choose,2,answers,
,
Critical,value,is,based,on,Fisher's,exact,test.,
Error,terms,are,independent,and,identically,distributed.,
Variances,are,not,equal.,
Parameters,β,0,,β,1,,and,σ,2,are,constant.,,ANS,-Error,terms,are,independent,and,identically,distributed.
Parameters,β,0,,β,1,,and,σ,2,are,constant.
Which,assumption,is,required,to,perform,a,two-sample,t-test?
Equal,variance,
Large,sample,size,
Small,sum,of,residuals,
Equal,mean,,ANS,-Equal,variance
Given,the,following,statistical,model:,
,
,y,=,42,-,4.6,b,
,
Match,each,element,of,the,model,with,its,corresponding,term.,
,
Answer,options,may,be,used,more,than,once,or,not,at,all.,Select,your,answers,from,the,pull-down,list.,
,
,y,Dependent,variable,Dependent,variable
,42,Intercept,Intercept
,-4.6,Slope,Slope
,b,Independent,variable,Independent,variable,,ANS,-y,Dependent,variable,Dependent,variable
, ,42,Intercept,Intercept
,-4.6,Slope,Slope
,b,Independent,variable,Independent,variable
Given,the,following,generalized,two-sample,t-test,equation:,
,
,yi,,j,=,µi,+,εi,,j,
,
Classify,each,element,in,the,equation.,
Answer,options,may,be,used,more,than,once,or,not,at,all.,
Select,your,answers,from,the,pull-down,list.,,ANS,-yi,,j,Observed,value,Observed,value
,µi,Mean,response,Mean,response
,εi,,j,Error,term,Error,term
Given,the,following,linear,model:,
,
,y,i,=,β,0,+,β,1,xi,+,ε,i,
,
Classify,each,element,correctly.,
,
Answer,options,may,be,used,more,than,once,or,not,at,all.,
Select,your,answer,from,the,pull-down,list.,,ANS,-y,i,Response,variable,Response,variable
,β,0,+,β,1,xi,Mean,response,Mean,response
,xi,Explanatory,variable,Explanatory,variable
A,study,comparing,graduating,cumulative,GPAs,from,students,with,two,different,majors,is,conducted,to,s
tudy,the,effect,of,each,major,on,academic,achievement.,From,the,list,of,all,graduating,students,in,both,m
ANSWERS 2024 - 2025
In,a,standard,52-
card,deck,,where,each,card,is,assigned,a,numeric,value,,the,mean,of,the,52,cards,is,7.0,with,a,standard,de
viation,of,3.742.,To,test,if,a,representative,sample,can,be,attained,,the,deck,is,shuffled,and,13,cards,are,ra
ndomly,drawn,,one,at,a,time.,Each,card,is,recorded,and,then,returned,randomly,to,the,deck,before,the,ne
xt,card,is,drawn.,This,process,of,drawing,13,random,cards,is,repeated,a,total,of,20,times,,and,the,mean,an
d,standard,deviation,of,each,round,is,computed.,
,
Which,type,of,sampling,is,this,an,example,of?
Randomization,
Multiple,comparison,
Matched,pairs,
Bootstrap,,ANS,-Bootstrap
A,study,is,done,to,determine,if,the,color,of,an,apple,affects,the,purchase,rate,by,consumers,at,a,grocery,st
ore.,Purchase,counts,for,three,colors,of,apples,are,collected.,
Which,technique,should,be,used,to,determine,if,there,is,a,difference,in,purchase,rate,by,color?
Rank-based,
Randomization,
t-test,
ANOVA,,ANS,-ANOVA
A,hospital,network,collects,the,amount,of,time,it,takes,doctors,to,see,patients.,
Which,two,techniques,are,appropriate,to,compare,the,mean,times,of,two,subsets,within,this,set,of,doctor
s?,
,Choose,2,answers,
,
ANOVA,
t-test,
Logistic,regression,
Principal,component,analysis,,ANS,-ANOVA
t-test
A,data,analyst,needs,to,determine,whether,antioxidants,in,blackberries,can,reduce,age-
related,cognitive,decline.,Twenty-
five,adults,between,65,and,80,are,selected,to,eat,blackberries,for,six,months,and,be,retested.,The,original,
scores,are,compared,with,the,second,scores,to,determine,whether,there,was,decline.,
What,is,the,appropriate,model,to,test,the,hypothesis?
z,test,
ANOVA,
Linear,regression,
Two-sample,t-test,,ANS,-Two-sample,t-test
Which,assumption,does,a,data,analyst,have,to,make,when,performing,ANOVA,on,a,dataset?
There,are,just,two,parameters,that,are,being,estimated.,
The,error,terms,follow,a,normal,probability,distribution.,
The,parameters,are,additive.,
The,explanatory,variable,is,continuous.,,ANS,-The,error,terms,follow,a,normal,probability,distribution.
Which,two,assumptions,are,made,when,the,linear,regression,model,is,used?,
,Choose,2,answers,
,
Critical,value,is,based,on,Fisher's,exact,test.,
Error,terms,are,independent,and,identically,distributed.,
Variances,are,not,equal.,
Parameters,β,0,,β,1,,and,σ,2,are,constant.,,ANS,-Error,terms,are,independent,and,identically,distributed.
Parameters,β,0,,β,1,,and,σ,2,are,constant.
Which,assumption,is,required,to,perform,a,two-sample,t-test?
Equal,variance,
Large,sample,size,
Small,sum,of,residuals,
Equal,mean,,ANS,-Equal,variance
Given,the,following,statistical,model:,
,
,y,=,42,-,4.6,b,
,
Match,each,element,of,the,model,with,its,corresponding,term.,
,
Answer,options,may,be,used,more,than,once,or,not,at,all.,Select,your,answers,from,the,pull-down,list.,
,
,y,Dependent,variable,Dependent,variable
,42,Intercept,Intercept
,-4.6,Slope,Slope
,b,Independent,variable,Independent,variable,,ANS,-y,Dependent,variable,Dependent,variable
, ,42,Intercept,Intercept
,-4.6,Slope,Slope
,b,Independent,variable,Independent,variable
Given,the,following,generalized,two-sample,t-test,equation:,
,
,yi,,j,=,µi,+,εi,,j,
,
Classify,each,element,in,the,equation.,
Answer,options,may,be,used,more,than,once,or,not,at,all.,
Select,your,answers,from,the,pull-down,list.,,ANS,-yi,,j,Observed,value,Observed,value
,µi,Mean,response,Mean,response
,εi,,j,Error,term,Error,term
Given,the,following,linear,model:,
,
,y,i,=,β,0,+,β,1,xi,+,ε,i,
,
Classify,each,element,correctly.,
,
Answer,options,may,be,used,more,than,once,or,not,at,all.,
Select,your,answer,from,the,pull-down,list.,,ANS,-y,i,Response,variable,Response,variable
,β,0,+,β,1,xi,Mean,response,Mean,response
,xi,Explanatory,variable,Explanatory,variable
A,study,comparing,graduating,cumulative,GPAs,from,students,with,two,different,majors,is,conducted,to,s
tudy,the,effect,of,each,major,on,academic,achievement.,From,the,list,of,all,graduating,students,in,both,m
