C784 STATISTICS FULL COURSE REVIEWED
AND CORRECTLY ANSWERED .
Lurking,Variable,,ANS,-
Associated,with,the,explanatory,and,the,response,variables,that,is,not,directly,being,studied.
Simpson's,Paradox,,ANS,-
Occurs,when,a,trend,or,result,that,appears,in,groups,of,data,disappears,when,we,combine,the,data.
Regression,Analysis,,ANS,-A,process,for,estimating,and,analyzing,the,relationship,between,variables.
Least-Squares,Regression,Line,,ANS,-AKA,the,line,of,best,fit.,
y,=,mx,+,b,
"rise,over,run"
Interpolation,,ANS,-Using,existing,data,along,with,the,Least-Squares,Regression,Line,to,make,a,prediction.
Extrapolation,,ANS,-Estimation,by,projecting,OUTSIDE,known,data,points.
p-value,,ANS,-the,probability,that,a,result,occurred,by,chance
Significance,Levels,in,Hypothesis,Testing,,ANS,-Statistically,Significant:,If,a,measured,p-
value,is,less,than,the,significance,level.
NOT,Statistically,Significant:,If,a,measured,p-value,is,MORE,than,the,significance,level.
Empirical,Rule,,ANS,-68,-,95,-,99.7
68%,is,w/in,1,standard,deviation,of,the,mean
, 95%,is,w/in,1,standard,deviation,of,the,mean
99.7%,is,w/in,1,standard,deviation,of,the,mean
Used,for,Categorical,(Qual),Data,,ANS,-Bar,Chart
Pie,Chart
Mean,,ANS,-Average,-,adding,series,then,dividing,by,the,total,number,in,that,series
Center,&,Spread,Measures,,ANS,-SYMMETRIC,-,Mean,(center),/,Standard,Deviation,(spread)
SKEWED,-,Median,(center),/,IQR,(spread)
CATEGORICAL,-,Mode,(center),/,no,spread
What,is,the,difference,between,a,bar,chart,and,a,histogram?,,ANS,-BAR,CHART,-
,Categorical,data,distributed,over,groups,of,categories
HISTOGRAM,-,Quantitative,data,distributed,over,various,intervals
Outlier,Formula,,ANS,-1.5,x,IQR,above,Q3,or,below,Q1
Graphical,Displays,for,Quantitative,Variables,,ANS,-HISTOGRAMS,-,large,data,sets
STEM,PLOTS,-,keeps,individual,data,points,
DOT,PLOTS,-,smaller,data,sets
BOX,PLOTS,-,center,,spread,and,5,number,summary
SCATTER,PLOTS,-,x,y,axis
5,Number,Summary,,ANS,-Min,-,Q1,-,Median,-,Q3,-,Max
AND CORRECTLY ANSWERED .
Lurking,Variable,,ANS,-
Associated,with,the,explanatory,and,the,response,variables,that,is,not,directly,being,studied.
Simpson's,Paradox,,ANS,-
Occurs,when,a,trend,or,result,that,appears,in,groups,of,data,disappears,when,we,combine,the,data.
Regression,Analysis,,ANS,-A,process,for,estimating,and,analyzing,the,relationship,between,variables.
Least-Squares,Regression,Line,,ANS,-AKA,the,line,of,best,fit.,
y,=,mx,+,b,
"rise,over,run"
Interpolation,,ANS,-Using,existing,data,along,with,the,Least-Squares,Regression,Line,to,make,a,prediction.
Extrapolation,,ANS,-Estimation,by,projecting,OUTSIDE,known,data,points.
p-value,,ANS,-the,probability,that,a,result,occurred,by,chance
Significance,Levels,in,Hypothesis,Testing,,ANS,-Statistically,Significant:,If,a,measured,p-
value,is,less,than,the,significance,level.
NOT,Statistically,Significant:,If,a,measured,p-value,is,MORE,than,the,significance,level.
Empirical,Rule,,ANS,-68,-,95,-,99.7
68%,is,w/in,1,standard,deviation,of,the,mean
, 95%,is,w/in,1,standard,deviation,of,the,mean
99.7%,is,w/in,1,standard,deviation,of,the,mean
Used,for,Categorical,(Qual),Data,,ANS,-Bar,Chart
Pie,Chart
Mean,,ANS,-Average,-,adding,series,then,dividing,by,the,total,number,in,that,series
Center,&,Spread,Measures,,ANS,-SYMMETRIC,-,Mean,(center),/,Standard,Deviation,(spread)
SKEWED,-,Median,(center),/,IQR,(spread)
CATEGORICAL,-,Mode,(center),/,no,spread
What,is,the,difference,between,a,bar,chart,and,a,histogram?,,ANS,-BAR,CHART,-
,Categorical,data,distributed,over,groups,of,categories
HISTOGRAM,-,Quantitative,data,distributed,over,various,intervals
Outlier,Formula,,ANS,-1.5,x,IQR,above,Q3,or,below,Q1
Graphical,Displays,for,Quantitative,Variables,,ANS,-HISTOGRAMS,-,large,data,sets
STEM,PLOTS,-,keeps,individual,data,points,
DOT,PLOTS,-,smaller,data,sets
BOX,PLOTS,-,center,,spread,and,5,number,summary
SCATTER,PLOTS,-,x,y,axis
5,Number,Summary,,ANS,-Min,-,Q1,-,Median,-,Q3,-,Max
