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.
An example of a cave system intersecting with a Stronghold. Up to 128 strongholds spawn per map on the PC edition, as of The Combat Update (vs only three on the Xbox and PS3 editions). Most strongholds have a Monster Spawners (for Silverfish), an abundance of Stone Bricks, Torches, Chests with randomized loot, Stone Slabs, and blocks found mainly underground such as Cobblestone.