CEFS 521 QUIZ 2, LIBERTY UNIVERSITY
QUESTION 1
If the researcher knows that the mean is 60 and the standard deviation is 6, then the majority of the
scores falling between +1 or -1 standard deviation of the mean fall between:
60 and 66
54 and 60
54 and 66
Not enough information is provided
QUESTION 2
A teacher reports that the class scores are generally distributed according to a bell curve. This means:
the mean, median, and mode have different values
the left half and the right half are not symmetrical
approximately 95% of the scores fall between -1 and +1 standard deviation from the mean
100% of the scores fall between -3 and +3 standard deviations from the mean
QUESTION 3
In comparing Spearman’s Rho to Phi Coefficient, one would generally prefer to use Spearman’s Rho
when correlating:
Likert scale responses
Gender
Relationship status
Ratio scale variables
, QUESTION 4
A teacher analyzes the scores from a recent test and determines a positively skewed curve. She infers
that the majority of students knew:
only a few of the answers due to low scores
most of the answers due to high scores
about half of the answers
an undetermined amount due to insufficient data
QUESTION 5
When looking at a list of students’ test scores, the teacher notices that one test score is extremely lower
than the majority of the scores. This is known as a(an):
outer point
median
range
outlier
QUESTION 6
A teacher determines that the correlation between eating breakfast and doing well on the test is zero. This
means:
a perfect correlation exists
there is an absence of a correlation
a negative correlation exists
the correlation cannot be determined
QUESTION 7
A researcher wants to know if IQ predicts success in college. Which analysis is most appropriate?
Spearman’s rho
Factor analysis
Regression
Pearson’s Product Moment Correlation
QUESTION 8
There are 12 participants who agree to take the test for a study focused on wellness. The total of all the
participants’ scores is 96. What is the mean?
84
QUESTION 1
If the researcher knows that the mean is 60 and the standard deviation is 6, then the majority of the
scores falling between +1 or -1 standard deviation of the mean fall between:
60 and 66
54 and 60
54 and 66
Not enough information is provided
QUESTION 2
A teacher reports that the class scores are generally distributed according to a bell curve. This means:
the mean, median, and mode have different values
the left half and the right half are not symmetrical
approximately 95% of the scores fall between -1 and +1 standard deviation from the mean
100% of the scores fall between -3 and +3 standard deviations from the mean
QUESTION 3
In comparing Spearman’s Rho to Phi Coefficient, one would generally prefer to use Spearman’s Rho
when correlating:
Likert scale responses
Gender
Relationship status
Ratio scale variables
, QUESTION 4
A teacher analyzes the scores from a recent test and determines a positively skewed curve. She infers
that the majority of students knew:
only a few of the answers due to low scores
most of the answers due to high scores
about half of the answers
an undetermined amount due to insufficient data
QUESTION 5
When looking at a list of students’ test scores, the teacher notices that one test score is extremely lower
than the majority of the scores. This is known as a(an):
outer point
median
range
outlier
QUESTION 6
A teacher determines that the correlation between eating breakfast and doing well on the test is zero. This
means:
a perfect correlation exists
there is an absence of a correlation
a negative correlation exists
the correlation cannot be determined
QUESTION 7
A researcher wants to know if IQ predicts success in college. Which analysis is most appropriate?
Spearman’s rho
Factor analysis
Regression
Pearson’s Product Moment Correlation
QUESTION 8
There are 12 participants who agree to take the test for a study focused on wellness. The total of all the
participants’ scores is 96. What is the mean?
84
