Answer:
The achievement test had high split-half reliability.
Step-by-step explanation:
The achievement test had high split-half reliability.
Split-half reliability is a measure of a test's internal consistency, or the extent to which different parts of the test are measuring the same thing. High split-half reliability indicates that the test is consistent and that a person's score on one half of the test is a good predictor of their score on the other half of the test.
The fact that the correlation between correctly answered questions on the odd and even questions was extremely high indicates that the test is consistent in measuring the same construct or trait, which supports the notion of high split-half reliability.
It should be noted that:
- Predictive validity refers to the extent to which a test can predict future performance or behavior.
- Test-retest reliability refers to the consistency of a test's results over time.
- Content validity refers to the extent to which a test measures what it is supposed to measure.
- Criterion validity is the extent to which a test's scores are related to other variables that are considered to be criterion or standards.
Hope this helps.