#0 - Feb. 25, 2008, 10:49 a.m.
Boss mobs have a ~6.5% dodge chance versus your attacks. 6.5/0.24 = 26 Expertise needed to negate this completely, which equals 104 expertise rating. Also keep in mind, since ranged attacks can not be dodged by default, expertise only affects melee attacks.
Human rogues get a racial +5 expertise (1.25%) when using swords or maces. 19.7125 Expertise rating.
Combat rogues can get +10 expertise (2.5%). 39,425 Expertise rating.
Some items that give expertise :
* Shard of Contempt : 44 (11,16 @ L70)
* Slayer's Boots : 24 (6.09 @ L70)
* Belt of One-Hundred Deaths : 25 (6.34 @ L70)
* Shattered Sun Pendant of Resolve : 18 (4.57 @ L70)
* Brooch of Deftness : 21 (5.33 @ L70)
* Shoulderpads of the Stranger : 10 (2.54 @ L70)
* Gloves of the Searing Grip : 18 (4.57 @ L70)
* Grips of Deftness : 15 (3.8 @ L70)
* Shapeshifter's Signet : 20 (5.07 @ L70)
* Fang of Vashj : 21 (5.33 @ L70)
* Dragonscale-Encrusted Longblade : 25 (6.34 @ L70)
So, in patch 2.4 if you have the weapon expertise talent (39.425), Slayer's Boots (24), and Shard of Contempt (44) then you'd be on 107.425 Expertise rating. ~3 expertise rating over the cap.
Read the rest of the article here : http://rrvs.blogspot.com/2008/02/hit-and-expertise.html