Skip to main content
. 1999 Oct;20(9):1584–1596.

fig 3.

fig 3.

Validity and reliability of a test.

A, Good validity and reliability means the center of the target is always hit by different gunmen.

B, Good reliability but poor validity means the same area of the target is hit by different gunmen but off center.

C, Poor reliability of the test means the bullets are spread out, all over the target, with a few hitting the center. In the hands of a few gunmen a test can be valid, since the center of the target is hit.