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04-02-2020
Social Studies

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A researcher administers a test of friendliness to a sample of ghosts on Halloween night. The researcher then administers the same test to the same ghosts on Halloween night one year later, and computes the correlation between this year's scores and last year's scores. This correlation coefficient is a measure of____________.

a. internal reliability
b. test-retest reliability
c. faceless validity
d. predictive validity

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04-02-2020

Answer:

Test-retest reliability

Explanation:

Test-retest reliability is a technique that is used in statistics to measure the reliability of a test. This test is called test-retest reliability because of testing the same people, on the same topic, same place at different times. This test is used to see the score of the previously conducted test and current test. This test used to find the correlation between these two tests past tests and current tests.

Thus here in the above context, a researcher experiments on people at Halloween night. After a year conduct a retest on the same peo[le to find out the correlation between past and current situation.

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