C784 MODULE 6 CORRELATION & REGRESSION
QUIZZES WITH ACTUAL ANSWERS.
lurking,variable,,ANS,-
A,variable,that,is,not,included,in,an,analysis,but,that,is,related,to,two,(or,more),other,associated,variab
les,which,were,analyzed.
simple,linear,regression,,ANS,-
the,prediction,of,one,response,variable's,value,from,one,explanatory,variable's,value
Simpson's,Paradox,,ANS,-
A,counterintuitive,situation,in,which,a,trend,in,different,groups,of,data,disappears,or,reverses,when,th
e,groups,are,combined.
degree,,ANS,-The,largest,exponent,in,a,mathematical,expression,or,equation.
causation,,ANS,-A,relationship,of,cause,and,effect,between,two,or,more,variables.
linear,interpolation,,ANS,-
Estimation,using,the,linear,regression,equation,is,between,known,data,points.
association,,ANS,-A,pattern,or,relationship,between,two,variables.
coordinate,plane,,ANS,-A,tool,for,graphing,consisting,of,a,horizontal,x-axis,and,a,vertical,y-axis.
regression,equation,,ANS,-
An,equation,used,to,model,the,relationship,between,two,quantitative,dependent,and,independent,vari
ables.
scatterplot,,ANS,-
A,graph,that,uses,dots,on,a,coordinate,plane,to,show,the,relationship,between,variables.
, Regression,Analysis,,ANS,-
a,statistical,tool,that,quantifies,the,relationship,betwn,a,response,variable,and,one,or,more,explanator
y,variables
least,squares,,ANS,-A,technique,for,finding,the,regression,line.
slope-intercept,form,,ANS,-
A,common,format,for,the,equation,of,a,line:,y,=,mx,+,b,,where,m,is,the,slope,and,b,is,the,y-intercept.
regression,line,,ANS,-
The,line,of,best,fit,to,show,the,relationship,between,variables,,the,one,that,minimizes,distance,from,ea
ch,data,point,to,the,line.
A,linear,regression,equation,takes,the,following,form:
y,=,mx^2,+,b.,True,or,False?,,ANS,-false.,
This,is,not,the,form,that,a,linear,regression,equation,takes.,
Linear,regression,is,always,of,degree,1,,so,the,exponent,of,2,associated,with,the,x,makes,this,a,non-
linear,equation.
A,linear,regression,"best-fit-line",can,be,estimated,using,least,squares.,True,or,False?,,ANS,-true.,
Least,squares,estimation,is,the,most,common,technique,used,to,estimate,the,best-fit-
line,in,linear,regression.
Linear,extrapolation,is,always,a,reliable,method,of,prediction.,True,or,False?,,ANS,-false.,
Extrapolation,assumes,that,the,linear,pattern,of,the,data,will,continue,outside,of,the,range,of,data,poi
nts.,This,may,not,always,be,the,case,and,therefore,may,not,always,be,a,reliable,method,of,prediction.
QUIZZES WITH ACTUAL ANSWERS.
lurking,variable,,ANS,-
A,variable,that,is,not,included,in,an,analysis,but,that,is,related,to,two,(or,more),other,associated,variab
les,which,were,analyzed.
simple,linear,regression,,ANS,-
the,prediction,of,one,response,variable's,value,from,one,explanatory,variable's,value
Simpson's,Paradox,,ANS,-
A,counterintuitive,situation,in,which,a,trend,in,different,groups,of,data,disappears,or,reverses,when,th
e,groups,are,combined.
degree,,ANS,-The,largest,exponent,in,a,mathematical,expression,or,equation.
causation,,ANS,-A,relationship,of,cause,and,effect,between,two,or,more,variables.
linear,interpolation,,ANS,-
Estimation,using,the,linear,regression,equation,is,between,known,data,points.
association,,ANS,-A,pattern,or,relationship,between,two,variables.
coordinate,plane,,ANS,-A,tool,for,graphing,consisting,of,a,horizontal,x-axis,and,a,vertical,y-axis.
regression,equation,,ANS,-
An,equation,used,to,model,the,relationship,between,two,quantitative,dependent,and,independent,vari
ables.
scatterplot,,ANS,-
A,graph,that,uses,dots,on,a,coordinate,plane,to,show,the,relationship,between,variables.
, Regression,Analysis,,ANS,-
a,statistical,tool,that,quantifies,the,relationship,betwn,a,response,variable,and,one,or,more,explanator
y,variables
least,squares,,ANS,-A,technique,for,finding,the,regression,line.
slope-intercept,form,,ANS,-
A,common,format,for,the,equation,of,a,line:,y,=,mx,+,b,,where,m,is,the,slope,and,b,is,the,y-intercept.
regression,line,,ANS,-
The,line,of,best,fit,to,show,the,relationship,between,variables,,the,one,that,minimizes,distance,from,ea
ch,data,point,to,the,line.
A,linear,regression,equation,takes,the,following,form:
y,=,mx^2,+,b.,True,or,False?,,ANS,-false.,
This,is,not,the,form,that,a,linear,regression,equation,takes.,
Linear,regression,is,always,of,degree,1,,so,the,exponent,of,2,associated,with,the,x,makes,this,a,non-
linear,equation.
A,linear,regression,"best-fit-line",can,be,estimated,using,least,squares.,True,or,False?,,ANS,-true.,
Least,squares,estimation,is,the,most,common,technique,used,to,estimate,the,best-fit-
line,in,linear,regression.
Linear,extrapolation,is,always,a,reliable,method,of,prediction.,True,or,False?,,ANS,-false.,
Extrapolation,assumes,that,the,linear,pattern,of,the,data,will,continue,outside,of,the,range,of,data,poi
nts.,This,may,not,always,be,the,case,and,therefore,may,not,always,be,a,reliable,method,of,prediction.
