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COUC 521 Quiz: Reliability and Validity | Score 25/25 | Liberty University

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COUC 521 Quiz: Reliability and Validity | Score 25/25 | Liberty University










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June 30, 2025
Number of pages
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Written in
2024/2025
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Quiz: Reliability and Validity Results for Krista Rodgers


Correct answers are hidden.

Score for this quiz: 25 out of 25 Submitted
Jun 2 at 10am
This attempt took 17 minutes.

1..25 pts
Question 1


The SEM for an achievement test is 2.45. Johnny scores 100 and we assume
that 68% of the time his true score falls between + 1 SEM; this
means the confidence interval would be between:


0 and 102.45


2.45 and 100


95.10 and 104.90


97.55 and 102.45




1..25 pts
Question 2

A researcher is concerned with measuring internal consistency reliability and has
decided to use the Kuder-Richardson Formulas with a Likert scale test; this is a
problem because the:


Test does not have dichotomous test items.


Researcher needs a second test for comparison.


Test does not measure internal consistency reliability.

, Researcher is concerned with content sampling error.



1..25 pts
Question 3


If the reliability coefficient of a test is determined to be .27, what
percentage is attributed to random chance or error?


27%


73%


2.7%


Unknown percentage




1..25 pts
Question 4


You are attempting to account for a time sampling error and decide to
administer the test a second time. In discussing reliability, you report this as what
method of estimating reliability?


Alternate forms




Split-half reliability


Internal consistency reliability




1..25 pts
Question 5


The test manual reports a reliability coefficient (r) of .92, which means:

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