Arbitrary Statistics 

Those statistics people make up on the spot to try and give their statement some credibility.

Jeff—Yo, do you know how good my airsoft gun will be if I replace the trigger?
Eric— Probably 50% or 60% more height on the shots with a new trigger.
(Eric uses arbitrary statistics to make himself look smarter in front of Jeff.)

Arbitrary Statistics by Jaronbill May 20, 2010