A.
It has the assumption of a normal distribution
B.
It is a parametric test.
C.
It is used for two nominal variables
page 587
Question 15
5 / 5 pts
A group of 15 nurses was asked which of two types of coffee they preferred. Seven of the nurses
preferred the first type, while eight of the nurses preferred the second type. Which statistical test
would be appropriate to determine differences in these two groups?
A.
Chi-square
B. paired
t
-test
C.
parametric test
page 587
Question 16
5 / 5 pts
Descriptive statistics should be reported in every study for which of the following reasons?
A.
To determine validity
B.
As an indication of reliability
C.
To show the sample characteristics
D.
To provide a powerful analysis of data
page 550

Question 17
5 / 5 pts
When there is an outlier in the data set, which measure of central tendency is effected the most?
A. Mode
B. Median
C.
Mean
page 553
Question 18
5 / 5 pts
Which of the following measures is the most helpful both for providing a quantification of
dispersion and for providing a way to interpret how far away from the mean each individual
score is?
A. Range
B.
Difference scores
C. Magnitude
D.
Standard deviation
page 554
Question 19
5 / 5 pts
The statistical procedure most commonly used for prediction is _____________.
A.
Chi-square test of independence
B.
t
-test
C.
standard deviation
D.
regression analysis
page 570

Question 20
5 / 5 pts
A researcher collects a nationally based set of data about cholesterol levels and age at first
circulatory incident (myocardial infarction or cerebrovascular accident). The researcher performs
a linear regression analysis to find out all of the following
except:
A.
Estimate the age at which circulatory incidents are likely to occur, given the cholesterol
level.
B.
Determine whether there is a linear relationship between cholesterol levels and
circulatory incidents.
C.
Determine if there are
differences
between the cholesterol levels and the number of
circulatory incidents.
Calculate the strength of the relationship between cholesterol levels and circulatory incidents.
page 571

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- Summer '19
- Statistics, researcher, Statistical significance