when my Pokemon levels up, as well as the usual yello stat boosting numbers, there are little blue bonus ones for suposedly random stats. they aren't EVs; they don't exist. they're not AVs: my Pokemon has not candied. are they IVs? what?
You mean the arrows in this? - (This was the best picture I could find :P)
Those show an increase in AV, which can be increased by Candies or Leveling Up (you gain 1 random AV while leveling up). :P
Hope I Helped!