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What is the KR20 formula used for?
A) Estimating the reliability of the full test from the reliability of the half test
B) Estimating the reliability of the half test from the reliability of the full test
C) Estimating the reliability of the full test from the reliability of the parallel test
D) Estimating the reliability of the parallel test from the reliability of the full test
What is the KR21 formula used for?
A) Estimating the reliability of the full test from the reliability of the half test
B) Estimating the reliability of the half test from the reliability of the full test
C) Estimating the reliability of the full test from the reliability of the parallel test
D) Estimating the reliability of the parallel test from the reliability of the full test
What is the primary reason for ensuring the reliability of tests?
A) Educational advancement of students
B) Job selection
C) Future decisions based on test results
D) All of the above
How does adding more homogeneous questions to a test affect its reliability?
A) It decreases the reliability
B) It increases the reliability
C) It has no effect on the reliability
D) It depends on the type of questions added
What is the effect of test length on reliability?
A) Longer tests decrease reliability
B) Longer tests increase reliability
C) Test length has no effect on reliability
D) It depends on the type of test
How does the method used to estimate reliability affect the reliability coefficient?
A) It has no effect
B) It can increase or decrease the reliability coefficient
C) It always increases the reliability coefficient
D) It always decreases the reliability coefficient
What is the relationship between the heterogeneity of scores and test reliability?
A) Higher heterogeneity decreases reliability
B) Higher heterogeneity increases reliability
C) There is no relationship between heterogeneity and reliability
D) It depends on the type of test
How does the difficulty level of a test affect its reliability?
A) More difficult tests increase reliability
B) More difficult tests decrease reliability
C) Moderate difficulty increases reliability
D) Difficulty level has no effect on reliability
How do errors in test development affect test reliability?
A) They increase reliability
B) They decrease reliability
C) They have no effect on reliability
D) It depends on the type of error
What is the relationship between the overall look of a test and students’ scores?
A) It has no effect
B) It increases scores
C) It decreases scores
D) It depends on the font size
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