What are the most important statistics for a shaman?
Short answer: INT, STA, and SPI. Long answer: it is really based on your build. If you wish to make a more melee based shaman, then strength, agility, and stamina are probably things you wish to maximize. Some shamans find a agility based build to be more to their taste (see: http://forums.worldofwarcraft.com/thread.aspx?fn=wow-shaman&t=23517&p=1&tmp=1#post23517 ). Given that we are an hybrid class with decent melee, there is no really wrong answer. And given that all statistic maximizing is done with equipment, you can keep all your bases covered with a varied selection of choice equipment stored in your vault. Iistaur made a good post here http://forums.worldofwarcraft.com/thread.aspx?fn=wow-shaman&t=36420&tmp=1#post36420 with the following information: Your level in agility will increase your chance to crit on a melee hit by about 1.03%. Half your level in agility will increase your chance to dodge or parry by about 1.03%. 1 Strength* = 0.142 DPS so its basically 7 Strength = 1 DPS
