PSYC 3301 Exam 2 Practice MC Exam Questions
With Correct Answers
Candy |is |a |first |grade |teacher. |She |thinks |sugar |makes |people |feel |sad. |To |test |her |idea, |she |
gives |half |of |her |students |candy |with |real |sugar, |and |the |other |half |get |candy |with |Xylitol. |She |
then |measures |how |sad |each |student |feels. |What |is |Candy's |population? |- |CORRECT |
ANSWER✔✔-people
The |Jonas |Brothers |want |to |be |100% |confident |regarding |how |much |Americans |as |a
whole |hate |their |music. |To |be |100% |confident |regarding |how |much |Americans |hate |their |
music, |they |will |need |to: |- |CORRECT |ANSWER✔✔-conduct |a |census
Frodo |wants |to |know |how |overweight |Hobbits |are, |on |average. |But |he's |lazy |and |doesn't
want |to |walk |very |far. |So, |he |just |asks |the |people |who |live |within |a |few |blocks |of |him |about |
their |weight. |Frodo's |sample |has |high |levels |of: |- |CORRECT |ANSWER✔✔-bias
Analyse |wants |to |know |how |many |clients |the |average |lawyer |Philadelphia |has. |She
obtains |a |list |of |all |the |law |firms |in |Philly. |She |randomly |picks |80 |law |firms, |and |asks |every |
lawyer |at |each |selected |firm |how |many |clients |they |have. |Analyse |is |using: |- |CORRECT |
ANSWER✔✔-cluster |sampling
Bilbo |wants |a |sample |of |people |who've |been |attacked |by |a |dragon. |Fortunately, |dragon
attacks |are |pretty |rare. |So, |every |time |he |finds |a |dragon-attack |victim |to |include |in |his |study, |
Bilbo |asks |the |participant |to |recommend |other |acquaintances |of |theirs |who've |also |been |
attacked |by |a |dragon. |Bilbo |is |using: |- |CORRECT |ANSWER✔✔-snowball |sampling
, Sauron |wants |to |know |what |percent |of |the |population |is |good |vs. |evil. |He |knows |that
there |are |600 |castles |in |the |world. |He |randomly |picks |25 |castles |and |asks |everyone |in |the |
castle |whether |they |are |good |or |evil. |Sauron |is |using: |- |CORRECT |ANSWER✔✔-cluster |
sampling
Mollybeck |wants |to |know |whether |student |athletes |at |SMU |are |happier |than
non-athletes. |She |obtains |a |list |of |every |single |SMU |student |and |randomly |picks |100 |names. |
Just |due |to |a |purely |random |quirk, |it |just |so |happens |that |literally |every |athlete |in |Mollybeck's
|sample |is |a |benchwarmer |who |doesn't |ever |play. |Mollybeck |finds |that |athletes |are |less |happy
|than |non-athletes. |Mollybeck's |sample |has |high |levels |of: |- |CORRECT |ANSWER✔✔-error
What |is |the |best |thing |that |Mollybeck |can |do |to |reduce |the |amount |of |sampling |error |in
her |study? |- |CORRECT |ANSWER✔✔-draw |a |bigger |sample
This |completely |hypothetical |distribution |of |exam |scores |is: |(majority |of |scores |are |on |the |
right, |tail |is |on |the |left) |- |CORRECT |ANSWER✔✔-negatively |(left) |skewed
Ajit |wants |to |know |whether |Americans |more |strongly |support |internet |freedom |or
increasing |Comcast's |profits. |Of |course, |in |reality, |Americans |vastly |more |strongly |support |
internet |freedom. |But |Ajit |draws |a |sample |of |only |20 |adults |and |finds |that |his |sample |equally |
supports |internet |freedom |and |increasing |Comcast's |profits. |Silly |Ajit! |Ajit's |statistical |
conclusions |are: |- |CORRECT |ANSWER✔✔-type |II |error
Connor |wants |to |know |whether |anti-depressants |make |people |happier. |He |recruits |20
people, |10 |of |whom |are |taking |an |antidepressant |and |10 |of |whom |are |not, |and |measures |
their |happiness |on |a |scale |from |1-5. |He |finds |that |the |mean |difference |between |people |taking
|antidepressants |and |those |who |aren't |is |4.5. |Silly |Connor! |Connor's |results |are |almost |
guaranteed |to |be: |- |CORRECT |ANSWER✔✔-type |M |error
Insulting |people |makes |them |angry. |The |true |population |correlation |is |r |= |.30. |Klaus |is |a
With Correct Answers
Candy |is |a |first |grade |teacher. |She |thinks |sugar |makes |people |feel |sad. |To |test |her |idea, |she |
gives |half |of |her |students |candy |with |real |sugar, |and |the |other |half |get |candy |with |Xylitol. |She |
then |measures |how |sad |each |student |feels. |What |is |Candy's |population? |- |CORRECT |
ANSWER✔✔-people
The |Jonas |Brothers |want |to |be |100% |confident |regarding |how |much |Americans |as |a
whole |hate |their |music. |To |be |100% |confident |regarding |how |much |Americans |hate |their |
music, |they |will |need |to: |- |CORRECT |ANSWER✔✔-conduct |a |census
Frodo |wants |to |know |how |overweight |Hobbits |are, |on |average. |But |he's |lazy |and |doesn't
want |to |walk |very |far. |So, |he |just |asks |the |people |who |live |within |a |few |blocks |of |him |about |
their |weight. |Frodo's |sample |has |high |levels |of: |- |CORRECT |ANSWER✔✔-bias
Analyse |wants |to |know |how |many |clients |the |average |lawyer |Philadelphia |has. |She
obtains |a |list |of |all |the |law |firms |in |Philly. |She |randomly |picks |80 |law |firms, |and |asks |every |
lawyer |at |each |selected |firm |how |many |clients |they |have. |Analyse |is |using: |- |CORRECT |
ANSWER✔✔-cluster |sampling
Bilbo |wants |a |sample |of |people |who've |been |attacked |by |a |dragon. |Fortunately, |dragon
attacks |are |pretty |rare. |So, |every |time |he |finds |a |dragon-attack |victim |to |include |in |his |study, |
Bilbo |asks |the |participant |to |recommend |other |acquaintances |of |theirs |who've |also |been |
attacked |by |a |dragon. |Bilbo |is |using: |- |CORRECT |ANSWER✔✔-snowball |sampling
, Sauron |wants |to |know |what |percent |of |the |population |is |good |vs. |evil. |He |knows |that
there |are |600 |castles |in |the |world. |He |randomly |picks |25 |castles |and |asks |everyone |in |the |
castle |whether |they |are |good |or |evil. |Sauron |is |using: |- |CORRECT |ANSWER✔✔-cluster |
sampling
Mollybeck |wants |to |know |whether |student |athletes |at |SMU |are |happier |than
non-athletes. |She |obtains |a |list |of |every |single |SMU |student |and |randomly |picks |100 |names. |
Just |due |to |a |purely |random |quirk, |it |just |so |happens |that |literally |every |athlete |in |Mollybeck's
|sample |is |a |benchwarmer |who |doesn't |ever |play. |Mollybeck |finds |that |athletes |are |less |happy
|than |non-athletes. |Mollybeck's |sample |has |high |levels |of: |- |CORRECT |ANSWER✔✔-error
What |is |the |best |thing |that |Mollybeck |can |do |to |reduce |the |amount |of |sampling |error |in
her |study? |- |CORRECT |ANSWER✔✔-draw |a |bigger |sample
This |completely |hypothetical |distribution |of |exam |scores |is: |(majority |of |scores |are |on |the |
right, |tail |is |on |the |left) |- |CORRECT |ANSWER✔✔-negatively |(left) |skewed
Ajit |wants |to |know |whether |Americans |more |strongly |support |internet |freedom |or
increasing |Comcast's |profits. |Of |course, |in |reality, |Americans |vastly |more |strongly |support |
internet |freedom. |But |Ajit |draws |a |sample |of |only |20 |adults |and |finds |that |his |sample |equally |
supports |internet |freedom |and |increasing |Comcast's |profits. |Silly |Ajit! |Ajit's |statistical |
conclusions |are: |- |CORRECT |ANSWER✔✔-type |II |error
Connor |wants |to |know |whether |anti-depressants |make |people |happier. |He |recruits |20
people, |10 |of |whom |are |taking |an |antidepressant |and |10 |of |whom |are |not, |and |measures |
their |happiness |on |a |scale |from |1-5. |He |finds |that |the |mean |difference |between |people |taking
|antidepressants |and |those |who |aren't |is |4.5. |Silly |Connor! |Connor's |results |are |almost |
guaranteed |to |be: |- |CORRECT |ANSWER✔✔-type |M |error
Insulting |people |makes |them |angry. |The |true |population |correlation |is |r |= |.30. |Klaus |is |a
