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on Basic words
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Understanding meaning

In a research context, reliability means that a test or measurement gives similar results for the same person every time that he or she takes this test under similar conditions.

For example:

You weigh yourself on a scale. The scale says you weigh 65 kilograms. You wait 5 minutes, and you do not do anything during those 5 minutes. You don't eat or drink - and then you weigh yourself again.

If the scale again says you weigh 65 kilograms, then that scale is reliable, and it has given you reliable results.

Reliable instruments are measuring instruments that give consistent results when you repeat the measurement under similar conditions.

Which 3 answers below are closest in meaning to this meaning of reliability?

Choose the 3 correct answers that best complete this sentence: A reliable test is a test that...

gives very similar results when the same person is re-tested under the same conditions.

gives results you can trust or rely on.

gives results that are unstable.

gives consistent results when the measure is repeated under similar conditions.