When a teacher gives a test to students on one occasion, repeats the exam on the same students at a later date, and then correlates the scores, the teacher is demonstrating interest in determining which of the following?
A. Face validity
B. Construct validity
C. Test-retest reliability
D. Split-half reliability

The correct answer is option C. Test-retest reliability

Explanation:

Test-retest reliability is a concept when the same test is taken under the same condition over different periods of time by the same individual. The outcome of this test to measure the internal reliability of the test itself.

If the result of the test remains constant throughout multiple testing, it would mean that the test itself is stable and consistent. If the test scores vary over time, it would deem weak and tater the reliability of the test.

answer; eliminate parking problems in cities, because a car took up only half as much space as a horse and buggy;

1. seasonal

2. frictional unenployment

3. the number of the labor force multiplied by 100 and then subtract the number of unemployed.

4. 4%

5. an increase in prices