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Quiz: Statistical Concepts
Due Sep 5, 2021 at 11:59pm Points 25 Questions 20
Time Limit 60 Minutes
This quiz is no longer available as the course has been concluded.
Attempt History
Attempt Time Score
LATEST Attempt 1 24 minutes 23.75 out of 25
Correct answers are hidden.
Score for this quiz: 23.75 out of 25
Submitted Sep 5, 2021 at 7pm
This attempt took 24 minutes.
1.25 / 1.25 pts
Question 1
When comparing the four scales of measurement, what
distinguishes the interval scale from the ratio scale?
Magnitude.
Equal intervals.
Absolute zero.
There is no difference.
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1.25 / 1.25 pts
Question 2
The variance is determined to be 36. What would be the standard
deviation?
6
18
9
Not enough information is provided.
1.25 / 1.25 pts
Question 3
In comparing Spearman’s Rho to a Phi Coecient, one would
generally prefer to use Spearman’s Rho when correlating:
Likert scale responses.
Gender.
Relationship status.
Ratio scale variables.
1.25 / 1.25 pts
Question 4
The teacher calculates the highest score as being 97 and the
lowest score as being 75. What is the range?
22
11
172
86
1.25 / 1.25 pts
Question 5
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
1.25 / 1.25 pts
Question 6
The teacher has a small class with only 7 students. The teacher
grades their homework and reports scores of: 10, 7, 8, 12, 9, 11,
and 13. What is the median?
10
70
35
15
1.25 / 1.25 pts
Question 7
A researcher is looking for a specic study report, in which he/she
knows the kurtosis value. He reads the following kurtosis values in
various reports. Which one supports a mesokurtic distribution?
0
1
-1
Unknown
1.25 / 1.25 pts
Question 8
A researcher determines that there is a positive correlation
between sleep and test scores; this means that as the amount of
sleep is increased, then test scores will:
Increase.
Decrease.
Remain the same.
Cannot be determined.
1.25 / 1.25 pts
Question 9
In a follow-up study, a researcher reported that the correlation is
.85. In the initial study, the correlation was .78. This means there is
a/an:
Stronger correlation between the variables in the follow-up study.
Weaker correlation between the variables in the follow-up study.
Unknown difference between the two studies.
Error and the researcher should repeat the study.
1.25 / 1.25 pts
Question 10
The teacher grades the papers and determines the following set of
scores: 90, 85, 87, 85, 92, 90, 83, 85, and 98. What is the mode?
92
85
98
83
1.25 / 1.25 pts
Question 11
Z scores, T scores, and deviation IQs are examples of:
Stanines.
Standard scores.
Raw scores
Percentile ranks.
1.25 / 1.25 pts
Question 12
A type of standard score with a mean of 100 and a standard
deviation of 15 is:
Deviation IQs.
Z scores.
T scores.
Percentiles.
1.25 / 1.25 pts
Question 13
In a test which results in a report that describes how well the test
taker does in comparison with other individuals, it is important to
consider whether the:
Norm group is clearly dened.
Cut-off scores have been clearly established.
Content domain is clearly dened.
Angoff method was followed during test construction.
1.25 / 1.25 pts
Question 14
Grade equivalents are useful because they:
Are equal units of measurement.
Predict the grade level a student is ready for.
Can easily provide a basis of comparison of a student’s
performance with other students at a given grade level.
Are comparable across tests and subtests within the same test.
1.25 / 1.25 pts
Question 15
Which type of normalized standard score is widely used in
education and categorizes test performance in nine broad units?
Sten scores
Stanines
Normal curve equivalent (NCE)
Deviation IQs
1.25 / 1.25 pts
Question 16
In _______________ test interpretation, content domain is an
important consideration.
Norm-referenced.
Intelligence.
Projective.
Criterion-referenced.
1.25 / 1.25 pts
Question 17
A school interested in measuring students’ progress in academic
subjects throughout the school years might choose to use:
Growth scale values (GSV).
Age and grade equivalents.
Sten scores.
Percentile ranks.
0 / 1.25 pts
Question 18
Incorrect
Incorrect
Percentile scores:
Can be added and averaged.
Provide an equal-interval scale of measurement.
Are equally spaced across all parts of a distribution.
Are commonly used to compare the relative ranking of an
individual’s test score.
1.25 / 1.25 pts
Question 19
Aptitude, intelligence, and achievement tests are all examples of:
Typical-performance tests.
Tests in which the Angoff method was applied during test
construction.
Tests with common means and standard deviation scores.
Maximum-performance tests.
1.25 / 1.25 pts
Question 20
A T score has a xed mean of __________ and a xed standard
deviation of __________.
60; 10
100; 15
50; 10
50; 1
Quiz Score: 23.75 out of 25
