The consistency of a measure, including test-retest, inter-rater, inter-method, and internal consistency, is called a. validity b. significance c. reliability d. testability

Reliabiltiy

Explanation:

In statistic, reability refers to whether the result of the reseasrch/study will show similar result if it conducted several times.

test-retest, inter-rater, inter-method, and internal consistency, are method that is used to measure this reability.

- Test-Retest , repeating the study several time and see whether there are simlarties at the end result

- Inter-Rater , telling more than one expert to reveiw the study to see whether they get the same condlusion.

-  inter-method, repeat the study with different measurement, to see whether the study give similar result with proprotiatonate scale.

- Internal consistency , determining whether the items that is used are consistent

a would be the answer