AnswersMO-PsychologyDescriptive Research

Descriptive and Inferential Statistics Answers

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1
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In a normal distribution, the mean, median, and mode are the same value.

A
T
B
F
3

The statement “More high school boys than girls will disagree with school rules” is an example of a(n) __________.

A
invalid research claim
B
inferential statistics study
C
directional research hypothesis
D
nondirectional research hypothesis
5

Which of the following is not commonly studied in psychology?

A
age
B
sleep patterns
C
aggression
D
human origins
7

If Emma received a standard score on a test that was ranked in the 82nd percentile, it indicates that __________.

A
18% of students scored lower than Emma
B
82% of students scored lower than Emma
C
Emma received a B on her test
D
Emma answered 18% of the test questions wrong
8

Standard deviation refers to the __________.

A
statistics used to organize, summarize, and describe sample data
B
value within a given set of data in its original form
C
average distance between variable scores and the mean in a set of data
D
difference between the largest and smallest variable scores in a set of data
12

Subtracting the lowest score in a data set from the highest is the appropriate way to calculate the __________.

A
range
B
median
C
standard deviation
D
mode
13

A _________ is a graphical representation of association between variables.

A
scatterplot
B
correlation plot
C
graphical plot
D
variable plot
15

The range and standard deviation of a distribution are __________.

A
measures of central tendency
B
measures of variability
C
types of transformed scores
D
types of percentiles
16

Correlational research results depicting a correlation coefficient of 0.5 means that the associated variables demonstrate a __________ relationship.

A
weak negative
B
moderately positive
C
weak positive
D
strong positive
17

The middle score in a set of given data is the __________.

A
mean
B
median
C
mode
D
range
20

A researcher wanting to determine if amount of hours sleeping was related to one’s attitude would evaluate the research study using __________ analysis.

A
variable
B
scatterplot
C
correlation
D
regression

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