Reliability and Validity

What answer best describes the difference between validity and reliability?

• If an assessment is reliable, your results will be very similar no matter when you take the test. Assessment validity refers to how well a test measures what it is supposed to measure.

• Reliability stands refers to being able to count on a test score while validity stands for an assessment being valid.

• Reliability refers to an assessment being simple while validity refers to a complex assessment.

According to the author a test is reliable if...

• The test measures what is supposed to measure.

• the test is neither too long nor too difficult.

• the test does not have any content that wasn't taught specifically in the classroom.

• if students get similar scores on the test regardless of the day when they take it.

The reliability coefficient is...

• A number that indicates the degree of validity the test has.

• A number that indicate how much we can trust in a test.

• A number indicating the amount of ideal items in a test.

• A number that indicates we can't trust a test.

Test-retest method is...

• A method to get two set of scores of the same test to compare.

• A method to make students retake a test to finally pass the exam.

• A method to ensure the test is valid enough and can be applied.

• A method to make sure not many students fail a course.

In the split half method...

• The students take one half of the test one day, the other half another day and then are marked and marks are compared to measure reliability.

• The class group is divided in two and they take two different versions of the same test.

• Students decide what half of the test to do and are scored on it. Then results are compared to measure reliability.

• Subjects take the test in the usual way, but each subject is given two scores, one for each half of the exam. The two scores are compared.

To ensure the high level of reliability of a test, the additional items included should be...

• Independent of each other and of existing items.

• Similar to other items and the existing ones.

• Fairly well devised and complex in their nature.

• reliable and valid.

To ensure the reliability of a test candidates...

• should be given options and freedom to complete a task.

• shouldn't be given many options. Tests items should be controlled

• should be provided with the most ambiguous items possible.

• should be allowed to complete tasks in the way they feel like.

Another way of making sure a test is reliable consist of...

• providing different types of questions to make sure the results are consistent.

• providing open questions so students can think of the best way to respond a test

• providing items that permit scoring which is as objective as possible.

• providing items that are very well-written.

The degree to which an assessment accurately assesses the concept and/or skill we are attempting to measure.

• Reliability

• Error Margin

• Validity

Validity is a concept that... (choose the best answer)

• Measures the consistency of the measurement taken under the study.

• Measures the accuracy of the concept that it supposes to measure.

• Covers the full range of the issue set for the study