Either

How many times they had + Hits.

Variance (Standard Deviation)

This reflects the differential of how many fantasy points a player scores vs the player's fantasy points average per game.

Shake (Coefficient of Variance)

To further emphasize consistency, simply divide that average variance by the player's fantasy points per game. This gives a percentage between 0% and 100%. 0% is perfectly consistent, while 100% is completely inconsistent.