Reliability and Validity

Reliability but Not Validity

Validity but Not Reliability

Neither Validity or Reliability

Validity and Reliability

Reliability

Validity

Error Margin

Reliability

Validity

Error Margin

Verifying that majority of students' scores are close to one another

Checking to see if it makes a difference when the test is taken

Calculating the distance between the highest and lowest student score

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.

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.

Reliability

Error Margin

Validity

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