PSYC 210 EXAM UPDATED QUESTIONS AND
CORRECT ANSWERS
◉ What type of statistic allows us to make judgments about the
population?
A. Random
B. Descriptive
C. Inferential
D. Intuitive.
Answer: C. inferential
explanation: to infer conclusions about the population with the
given statistics
◉ Variance is a(n) ______________ statistic?
A. Random
B. Descriptive
C. Inferential
D. Intuitive.
Answer: B. descriptive
,explanation: tells us how much data with in a sample vary with each
other; the spread of the distribution
◉ Which of these questions could be answered with descriptive
statistics alone?
A. What is the average GPA in PSYC210?
B. Do students perform better on the final relative to the midterm?
C. Does the number of hours spent studying predict midterm
scores?
D. Do males and females have different GPAs?.
Answer: A. What is the average GPA in PSYC210?
explanation: asking for the average/mean (center of the sample
distribution); the others are making judgements/infering
◉ A _________________ variable has theoretically infinite values.
A. Dependent
B. Discrete
C. Ordinal
D. Continuous.
Answer: D. Continuous
, ◉ Using letter grades (A, B, C, D, and F) to classify student
performance is an example of a(n) __________ scale.
A. Ratio
B. Continuous
C. Interval
D. Ordinal.
Answer: D. Ordinal
explanation: there's an order/ranking but don't have specific
intervals and can't multiple or add these letter grades
◉ Why would you be interested in graphing your data before
conducting any inferential statistics?
A. To see if you have any outliers that may impact the conclusions
you draw
B. Many statistics tests operate under the assumption that you have
a normal distribution
C. Jamovi will not let you conduct analyses without graphing your
data first
D. Both A and B.
Answer: D. Both A and B
A. To see if you have any outliers that may impact the conclusions
you draw
CORRECT ANSWERS
◉ What type of statistic allows us to make judgments about the
population?
A. Random
B. Descriptive
C. Inferential
D. Intuitive.
Answer: C. inferential
explanation: to infer conclusions about the population with the
given statistics
◉ Variance is a(n) ______________ statistic?
A. Random
B. Descriptive
C. Inferential
D. Intuitive.
Answer: B. descriptive
,explanation: tells us how much data with in a sample vary with each
other; the spread of the distribution
◉ Which of these questions could be answered with descriptive
statistics alone?
A. What is the average GPA in PSYC210?
B. Do students perform better on the final relative to the midterm?
C. Does the number of hours spent studying predict midterm
scores?
D. Do males and females have different GPAs?.
Answer: A. What is the average GPA in PSYC210?
explanation: asking for the average/mean (center of the sample
distribution); the others are making judgements/infering
◉ A _________________ variable has theoretically infinite values.
A. Dependent
B. Discrete
C. Ordinal
D. Continuous.
Answer: D. Continuous
, ◉ Using letter grades (A, B, C, D, and F) to classify student
performance is an example of a(n) __________ scale.
A. Ratio
B. Continuous
C. Interval
D. Ordinal.
Answer: D. Ordinal
explanation: there's an order/ranking but don't have specific
intervals and can't multiple or add these letter grades
◉ Why would you be interested in graphing your data before
conducting any inferential statistics?
A. To see if you have any outliers that may impact the conclusions
you draw
B. Many statistics tests operate under the assumption that you have
a normal distribution
C. Jamovi will not let you conduct analyses without graphing your
data first
D. Both A and B.
Answer: D. Both A and B
A. To see if you have any outliers that may impact the conclusions
you draw
