The standard deviation and range are both measures of the spread of a data set. Each number tells us in its own way how spaced out the data are, as they are both a measure of variation. The range relies on a very simple formula of subtracting the minimum data value from the maximum.
1 Locked Gold Chest, a chest found in the dungeon, which is opened with a Gold Key. 2  Pink Dungeon Chest, a chest that can be crafted. 3  Blue Dungeon Chest, a chest that can be crafted. 4  Green Dungeon Chest, a chest that can be crafted.
A heroic version of Scholomance was also announced. During the Mists of Pandaria press release, it was announced that there would be nine level 90 heroics for players as well as three raids with 16 raid bosses. All of the raids have three difficulties (Heroic, Normal, and Looking for Raid).