name for a rational number between zero and one? I'm searching for a unified name to convey for the concept that a number will always be between zero and one.
Some info for context:
in probability we've got a number between 0 and 1.  Percentages appear to be similar in that we've got a number between zero and one, but it is multiplied by one hundred.
The nearest names that I've got so far are "factor" or "coefficient", but both of these names could be larger than 1, or smaller than zero.

The rationals in the unit interval are known as positive proper fractions. For a real number $r > 0$ its fractional part is $\:\{r\}\: :=\: r - \lfloor r\rfloor\:.\ $  (I moved this comment to an answer per requests)
