This applies to each of the Choice items (Scarf, Band, Specs). When I give a Choice item to my Pokémon, how much does it increase the stat it applies to?
At level 50, a Jolly natured, 252 EV, 31 IV Tyranitar reaches 124 Speed. Once I add on the Choice Scarf, how much does it increase the Speed by?
EDIT: And does the boost given by a Choice item measure the same as a regular stat boost? For example, if I was at +1 Attack, would the boost be the same as that of a Choice Band?