define reliability. what are its types ? Explain in brief.
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Answer:
There are two types of reliability – internal and external reliability. Internal reliability assesses the consistency of results across items within a test. External reliability refers to the extent to which a measure varies from one use to another.
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The extent to which an experiment, test, or measuring procedure yields the same results on repeated trials.
Explanation:
Types of reliability and how to measure them:-
Type of reliability Measures the consistency.
Test-retest The same test over time.
Interrater The same test conducted by different
people.
Parallel forms Different versions of a test which are designed to be equivalent.
Internal consistency The individual items of a test.
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