Talk:Obsidian Shard

Necessary?
If you already put up a link to creatures that drop obsidian shards, is it really necessary to sum a(n incomplete) list of creatures in FoW that drop these? Class 18:13, 24 December 2009 (UTC)

Night fall version of shadow army question.
Do they also drop obby shards and rubies and sapphires? --Silver Edge 06:48, 13 February 2011 (UTC)
 * For Obsidian Shards, no. Nothing outside of FoW drops them.  For rubies/sapphires it's probably the normal everything-has-a-chance-to-drop-them chance.  --Valshia 20:40, 10 February 2011 (UTC)
 * If you read the article you will notice: "Random drop from specific creatures in The Fissure of Woe."
 * Not everything can drop rubies and sapphires, see Category talk:Drops ruby. --Silver Edge 06:48, 13 February 2011 (UTC)
 * I stand corrected then. --Valshia 18:16, 13 February 2011 (UTC)

Drop Data
Here's some data I gathered during my spirit-spammer runs through the spider cave (solo runs, normal mode). It's inconclusive, but maybe someone else is interested in extending it. Haven't seen a shard from the monsters that aren't listed as dropping shards, either. Didn't bother counting Shadow Army creatures, because I rarely killed any.

The confidence interval is the interval of all possible drop rates that I cannot reject with p<0.05 (p<0.01). That doesn't mean that "it's 95% (99%) likely that the actual drop rate is in that interval", it just means that "for any drop rate outside that interval, my measured drops are less than 5% (1%) likely to happen". Not sure how mathematically sound that approach is, but it shows that even 700 kills aren't enough to be conclusive.

Bonus Points: deduce from the kill counts how many runs I failed or abandoned, and where :p Tub 10:25, 31 May 2011 (UTC)