PSYC 3301 Exam 2 Practice MC 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? -
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: - 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: - 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: - 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: - 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: - 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: -
ANSWER error
What is the best thing that Mollybeck can do to reduce the amount of sampling error in
her study? - 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) - 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!
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? -
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: - 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: - 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: - 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: - 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: - 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: -
ANSWER error
What is the best thing that Mollybeck can do to reduce the amount of sampling error in
her study? - 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) - 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!
