File talk:Reliability and validity.svg
Unvalid should be Invalid in this diagram.
Description of Image
[edit]
The description of this image needs more information about how to interpret each target. In particular, the "unreliable, but valid" image needs an explanation. Also, what do the sizes of the black circles mean, if anything? Thelema418 (talk) 20:28, 26 October 2013 (UTC)
