Briareos H on 22/6/2006 at 01:19
Cauchy is clearly underrepresented in this thread.
Mr.Duck on 22/6/2006 at 01:36
I flunked Social Statistics this past semester...THANKS FOR REMINDING ME!
:(
Mortal Monkey on 22/6/2006 at 10:39
Congratulations.
Convict on 22/6/2006 at 13:10
Hey thx guys I'm hoping to use stats to pwn Thievery UT (plus learn stats by actually applying the theory).
*ahem*
Here's the first set of data shown as a leaf-stem diagram (don't know the way to line it up in HTML):
2|5,5
3|5,5,5,5,5,5
4|
5|0,0,0,0
6|0,0,0,0,0,0
7|0,5,5,5,5,5
8|5,5,5,5,5
9|
10|
11|0
s = 21.3307 (using the N rather than N-1 version of s formula).
x- = 60
Now if I group these data by groups of 15* we have:
5-19 = 0
20-34 = 2
35-49 = 6
50-64 = 10
65-79 = 6
80-94 = 5
95-109 = 0
110-124 = 1
Which looks like this:
Inline Image:
http://img74.imageshack.us/img74/3016/graph11ze.pngIf the standard deviation of 21 is correct to use and the mean is 60, then 3 standard deviations looks to be at 0 and 123 (which seems about right) and the graph now looks kind of normal distribution (??).
What I'm hoping to get out of this is to be able to estimate loot drop scores (the "population") by using this sample. If this sample conforms to the normal distribution I will use the mean as the central tendency and be able to state that e.g. 68% of the time you will get between
a and
b loot scores . If you have any other ideas on more information I could gleen from this then it would help me take TUT to a higher level! :p
Scots, I'm not an expert as I have never been trained in stats really, but I'm not sure that I'm after a confidence interval because the definition(?) I got from a (photocopied) textbook chapter is that "a CI contains the values between the highest and lowest values of μ that are not significantly different from our sample mean" and that's where the example I saw was used (t-test).
EDIT: *15 not 14!
thefonz on 22/6/2006 at 13:37
Aaaaaaaaaaaaaaargh!
It burns! It burns!
*statman and nobbin.
oudeis on 23/6/2006 at 20:44
ummmm....
Am I the only one who thinks that graph looks like he's flipping us the bird ( right-handed), or am I simply opening myself up to endless mockery for even asking about what others long since caught?
Raven on 23/6/2006 at 20:55
the normal distrubution... it shafts us all at some point....
nice
Mr.Duck on 24/6/2006 at 10:28
...to
Parker'sSire on 24/6/2006 at 17:48
uh....
I'm good at doing averages, if anyone needs help.
I can subtract pretty good too.
