PSYC /
210
/ /
Final
/ /
Exam
/ /
(Dr.
/ /
Harrison) Questions With Correct Answers
/ // // // //
A/
/researcher /
/runs //
a/
/multiple /
/regression /
/model /
/with //anxiety //as //the //outcome //and //number //of //cups //of //coffee //and //number //of //hours //slept
//as //the //predictors. //The //unstandardized //slope //for //cups //of //coffee //was //estimated //to //be //-
0.2. //What //is //a //correct //interpretation //of //this //number?
A. /
/For /
/each //additional //cup //of //coffee //consumed, //anxiety //is //expected //to //decrease //by //0.2 //points.
B. /
/For /
/each /
/additional /
/cup /
/of /
/coffee /
,/consumed, /
/anxiety /
/is //expected //to //decrease //by //0.2 //points, //holding //constant //number //of //hours //slept. //
C. //There //is //a //weak, //negative //correlation //between //cups //of //coffee //consumed //and //anxiety.
D. /
/Coffee /
/consumption /
/explains /
/20% //of //the //variance //in //anxiety //in //the //negative //direction //- //CORRECT //ANSWERS(S)✔✔B
In //multiple //regression, //we //can //use //unstandardized //regression //coefficients //to:
A. //see //which //predictor //is //the //strongest/best //predictor
B. //see //which //outcome //is //the //best
C. //give //us //an //indicator //of //relationship //strength
D. //determine //the //slope //of //the //line //between //two //variables //- //CORRECT //ANSWERS(S)✔✔D
How //do //we //determine //the //significance //of //the //slope //in //regression?
A. //examine //the //difference //between //the //predicted //value //and //the //overall //mean
B. /
/Examine /
, /the /
/different //between //the //predicted //value //of //an //outcome //and //the //actual //observed //value
C. //Examine //the //correlation //between //variables
D. //Run //a //t-test //for //the //slope //- //CORRECT //ANSWERS(S)✔✔D
A/
/researcher /
/runs //
a/
/multiple /
/regression /
/model //with //satisfaction //with //life //as //the //outcome //and //sense //of //community //and //self-
efficacy /
/as //the //predictors. //They //obtain //the //following //results: //Sense //of //community: //beta //= //3.0, //p
//= //.02 //Self-
efficacy: /
/beta //
=/
/3.0, //
p //= //.0001 //Which, //if //any, //is //the //stronger //predictor //of //satisfaction //with //life //and //why?
A. //Sense //of //community //because //it //has //a //larger //value //of //beta
B. //Self-efficacy //because //it //has //a //smaller //p-value
C. //They //are //equally //strong //because //they //have //the //same //value //of //beta
D. //There //is //not //enough //information //to //make //a //decision //- //CORRECT //ANSWERS(S)✔✔C
210
/ /
Final
/ /
Exam
/ /
(Dr.
/ /
Harrison) Questions With Correct Answers
/ // // // //
A/
/researcher /
/runs //
a/
/multiple /
/regression /
/model /
/with //anxiety //as //the //outcome //and //number //of //cups //of //coffee //and //number //of //hours //slept
//as //the //predictors. //The //unstandardized //slope //for //cups //of //coffee //was //estimated //to //be //-
0.2. //What //is //a //correct //interpretation //of //this //number?
A. /
/For /
/each //additional //cup //of //coffee //consumed, //anxiety //is //expected //to //decrease //by //0.2 //points.
B. /
/For /
/each /
/additional /
/cup /
/of /
/coffee /
,/consumed, /
/anxiety /
/is //expected //to //decrease //by //0.2 //points, //holding //constant //number //of //hours //slept. //
C. //There //is //a //weak, //negative //correlation //between //cups //of //coffee //consumed //and //anxiety.
D. /
/Coffee /
/consumption /
/explains /
/20% //of //the //variance //in //anxiety //in //the //negative //direction //- //CORRECT //ANSWERS(S)✔✔B
In //multiple //regression, //we //can //use //unstandardized //regression //coefficients //to:
A. //see //which //predictor //is //the //strongest/best //predictor
B. //see //which //outcome //is //the //best
C. //give //us //an //indicator //of //relationship //strength
D. //determine //the //slope //of //the //line //between //two //variables //- //CORRECT //ANSWERS(S)✔✔D
How //do //we //determine //the //significance //of //the //slope //in //regression?
A. //examine //the //difference //between //the //predicted //value //and //the //overall //mean
B. /
/Examine /
, /the /
/different //between //the //predicted //value //of //an //outcome //and //the //actual //observed //value
C. //Examine //the //correlation //between //variables
D. //Run //a //t-test //for //the //slope //- //CORRECT //ANSWERS(S)✔✔D
A/
/researcher /
/runs //
a/
/multiple /
/regression /
/model //with //satisfaction //with //life //as //the //outcome //and //sense //of //community //and //self-
efficacy /
/as //the //predictors. //They //obtain //the //following //results: //Sense //of //community: //beta //= //3.0, //p
//= //.02 //Self-
efficacy: /
/beta //
=/
/3.0, //
p //= //.0001 //Which, //if //any, //is //the //stronger //predictor //of //satisfaction //with //life //and //why?
A. //Sense //of //community //because //it //has //a //larger //value //of //beta
B. //Self-efficacy //because //it //has //a //smaller //p-value
C. //They //are //equally //strong //because //they //have //the //same //value //of //beta
D. //There //is //not //enough //information //to //make //a //decision //- //CORRECT //ANSWERS(S)✔✔C
