Technically, you are riht. In practice, though, it doesn't matter all that much.
It matters a lot.
As you say, we don't know where the distribution is truncated,
But we do know where it is truncated. It is truncated at 0 and at Rand's/Lanfear's strength, There's no doubts about this.
but let's assume for the sake of argument that it stops abruptly at 5 standard deviations below the mean (which is the same as changing the lower integration limit from -Infinity to -5).
No can do. We can't make any assumptions on SD. However, we do have facts about the upper and lower limits of OP strength. That's what we need to base things on.
This lifts Daigan to a whooping 0.318639 standard deviations below the mean. Even setting the cutoff at 3 standard deviations only lifts her to 0.315081. There just aren't enough people that far out to change the numbers a whole lot.
It makes all the difference when you realize that below 0 is just plain impossible. Sure, the additional area under the curve is not that huge, but it makes a difference. Either way, with the curve being truncated, the conclusion that if Daigian is strength 25, everyone in the world would be less than 1 SD from the mean is perfectly acceptable.
How many standard deviations is Lanfear
- 15/11/2012 06:04:39 PM
2075 Views
Hmm...
- 15/11/2012 07:25:34 PM
1213 Views
see we CAN agree on stuff 
- 15/11/2012 07:56:12 PM
1065 Views
- 18/11/2012 08:37:22 PM
958 Views
- 15/11/2012 07:56:12 PM
1065 Views
- 18/11/2012 08:37:22 PM
958 Views
Re:
- 18/11/2012 11:07:17 PM
1164 Views
- 18/11/2012 11:07:17 PM
1164 Views
Re:
- 19/11/2012 05:16:00 AM
992 Views
- 19/11/2012 05:16:00 AM
992 Views
Re:
- 19/11/2012 03:13:01 PM
996 Views
- 19/11/2012 03:13:01 PM
996 Views
They only reject 37.5%, not 62.5%
- 19/11/2012 03:19:19 PM
1001 Views
Re: They only reject 37.5%, not 62.5%
- 19/11/2012 04:01:43 PM
1206 Views
Re: They only reject 37.5%, not 62.5%
- 19/11/2012 09:04:04 PM
951 Views
Hmmm...
- 20/11/2012 02:08:40 AM
1018 Views
Perhaps, but Egwene is also being a bit dramatic in the scene as she managed
- 20/11/2012 04:28:57 AM
976 Views
Nope...
- 20/11/2012 03:13:13 PM
1025 Views
I believe she is being over dramatic
- 20/11/2012 03:26:24 PM
926 Views
Keep believing that...
- 20/11/2012 03:30:14 PM
1055 Views
*shrugs*
- 20/11/2012 03:49:10 PM
1005 Views
Tired and forkroot are the same now?
- 20/11/2012 03:55:22 PM
911 Views
No it's the literary device
- 20/11/2012 04:04:28 PM
1031 Views
Impossible. Daigian is exactly 0.32SD below the mean
- 19/11/2012 11:06:04 AM
975 Views
You keep saying that, but it is either a linear or a non-linear distribution
- 19/11/2012 09:09:32 PM
1031 Views
That's the whole point. Thanks for finally seeing it.
- 19/11/2012 09:43:27 PM
994 Views
keep believing that ... but you making up numbers isn't really relevant *NM*
- 20/11/2012 04:29:44 AM
654 Views
Please show me a number that is made up. The 0.32SD for Daigian is a rule of statistics.
- 20/11/2012 07:15:48 AM
956 Views
Ugh. I hate power level discussions. For real world applications, it should be kind of meaningless
- 16/11/2012 10:28:49 PM
947 Views
I don't really agree
- 18/11/2012 08:40:53 PM
891 Views
Perhaps, but we've seen that a MUCH weaker Channeler can win in a duel
- 19/11/2012 09:13:48 PM
962 Views
Re: Perhaps, but we've seen that a MUCH weaker Channeler can win in a duel
- 20/11/2012 08:10:01 AM
932 Views
Since I've proven that it's not a normal distribution in units of absolute strength, SDs don't apply
- 17/11/2012 07:48:21 PM
990 Views
You have proven nothing, except that you have an opinion *NM*
- 18/11/2012 02:21:35 AM
638 Views
You simply don't get it. It is mathematically a fact. There is no opinion involved.
- 18/11/2012 02:19:40 PM
835 Views
Only because you've assigned numeric values. That you created.
- 18/11/2012 02:40:51 PM
959 Views
It doesn't matter what figure you use...
- 18/11/2012 03:01:56 PM
840 Views
What if Daigian is one third Lanfear's strength?
- 18/11/2012 04:37:58 PM
982 Views
Sure you can
- 18/11/2012 10:09:31 PM
993 Views
Re: Sure you can
- 18/11/2012 10:54:50 PM
942 Views
You're right, though its 37.5%
- 19/11/2012 12:21:29 AM
907 Views
Oops, typo!
- 19/11/2012 02:54:25 AM
978 Views
Again, not possible, due to Daigian being just 0.3SD below the Mean
- 19/11/2012 08:37:01 AM
929 Views
Egwene is definitely not 2x Amys...
- 19/11/2012 04:05:12 PM
872 Views
Re: Egwene is definitely not 2x Amys...
- 19/11/2012 05:55:02 PM
799 Views
Egwene is about as strong as Melaine and Amys combined
- 19/11/2012 09:19:50 PM
917 Views
Re: Egwene is about as strong as Melaine and Amys combined
- 20/11/2012 02:11:26 AM
946 Views
Forkroot in every case
- 20/11/2012 04:32:26 AM
926 Views
No!
- 20/11/2012 03:15:16 PM
907 Views
I'm not going to go re-read the books to you on this
- 20/11/2012 03:39:46 PM
926 Views
You need to read it for yourself, since you're completely confused.
- 20/11/2012 03:54:26 PM
890 Views
Not going to argue this with you.
- 20/11/2012 04:09:44 PM
862 Views
Your own example disproved your point...
- 20/11/2012 04:39:25 PM
959 Views
let's see, she's both asleep and would need hours to regain her strength
- 20/11/2012 04:43:17 PM
850 Views
Enough!
- 20/11/2012 05:04:06 PM
938 Views
LOL ... whatever. You go on believing that ... no one else sees it this way. *NM*
- 20/11/2012 05:20:52 PM
626 Views
Re: Your own example disproved your point...
- 20/11/2012 05:10:15 PM
981 Views
Barasine + Katerine isn't that much less than
- 20/11/2012 05:26:31 PM
985 Views
Re: Egwene is definitely not 2x Amys...
- 20/11/2012 02:26:47 AM
858 Views
Re: Egwene is definitely not 2x Amys...
- 20/11/2012 09:03:40 AM
907 Views
Re: Egwene is definitely not 2x Amys...
- 20/11/2012 02:59:08 PM
943 Views
None of this is backed by any evidence...
- 20/11/2012 03:24:12 PM
859 Views
who said Cadsuane was 1.5x Moiraine or more?
- 20/11/2012 04:03:13 PM
861 Views
Nope...
- 20/11/2012 04:41:35 PM
903 Views
wrong
- 20/11/2012 04:48:50 PM
837 Views
Better evidence? LOL!
- 20/11/2012 03:18:55 PM
909 Views
Huh? How did you come to that conclusion?
- 20/11/2012 04:40:56 PM
900 Views
BEcause Cadsuane is close on the heels of Egwene?
- 20/11/2012 05:10:50 PM
818 Views
I'm not arguing that. I agree that Cadsuane is pretty close to Egwene
- 20/11/2012 05:50:34 PM
925 Views
Interesting, but let's go with your figures...
- 19/11/2012 06:54:54 AM
972 Views
Indeed
- 19/11/2012 08:16:44 AM
1013 Views
Rand is sort of a special case
- 20/11/2012 04:25:02 AM
839 Views
Regarding Mesaana...
- 20/11/2012 08:42:56 AM
910 Views
You continue to mix two things
- 20/11/2012 03:24:44 PM
840 Views
No
- 20/11/2012 04:54:19 PM
1059 Views
You are mistaken
- 20/11/2012 05:04:40 PM
918 Views
Probably, but the AS have no idea what 37.5% means
- 19/11/2012 02:59:26 AM
863 Views
It's irrelevant
- 19/11/2012 03:46:42 AM
934 Views
Agreed. Daigian is the marker of the absolute bottom of Aes Sedai strength.
- 19/11/2012 06:55:41 AM
900 Views
Daigian
- 19/11/2012 08:12:19 AM
922 Views
It is a direct marker due to RJ's quote
- 19/11/2012 08:50:26 AM
944 Views
You missed my point
- 19/11/2012 09:08:42 AM
879 Views
Asmodean would never have made the comment about 13 weakest AS
- 20/11/2012 04:41:11 AM
888 Views
Re: Asmodean would never have made the comment about 13 weakest AS
- 20/11/2012 09:07:49 AM
865 Views
Re: Sure you can
- 19/11/2012 09:22:09 AM
1008 Views
Care to explain this...
- 19/11/2012 05:06:28 PM
849 Views
Indeed
- 20/11/2012 07:16:37 AM
1070 Views
Explained far better than I ever could. Bravo.
- 20/11/2012 07:30:29 AM
887 Views
Well duh.
- 20/11/2012 02:57:24 PM
993 Views
Incorrect.
- 20/11/2012 04:28:07 PM
979 Views
No
- 20/11/2012 04:44:16 PM
954 Views
You're integrating without lower limits...
- 20/11/2012 02:55:06 PM
929 Views
Re: You're integrating without lower limits...
- 20/11/2012 04:37:57 PM
962 Views
It matters.
- 20/11/2012 05:22:40 PM
928 Views
We are not talking about a normal distribution in any case
- 20/11/2012 04:44:24 AM
773 Views
Re: We are not talking about a normal distribution in any case
- 20/11/2012 07:02:47 AM
966 Views
You must tell me of this special math...
- 20/11/2012 03:10:09 PM
860 Views
Re: You must tell me of this special math...
- 20/11/2012 04:29:40 PM
896 Views
Morghase is a placeholder...
- 20/11/2012 04:45:42 PM
963 Views
Well...
- 18/11/2012 08:43:59 PM
996 Views
Re: Well...
- 19/11/2012 03:40:44 PM
976 Views
Wow.
- 19/11/2012 03:53:47 PM
1022 Views
Well then you're both wrong I'm afraid
- 19/11/2012 06:09:36 PM
872 Views
Re: Well then you're both wrong I'm afraid
- 19/11/2012 07:42:58 PM
774 Views
this is why I think all of the Forsaken are very close in Power
- 20/11/2012 04:51:20 AM
968 Views
Re: this is why I think all of the Forsaken are very close in Power
- 20/11/2012 02:45:18 PM
909 Views
I think RJ went out of his way to keep strength a bit of a mystery
- 20/11/2012 08:42:44 PM
914 Views
Math gurus...Is it possible to find the missing variable...
- 21/11/2012 05:12:24 PM
918 Views
the problem is that the Mean is not going to tell us much really
- 22/11/2012 02:55:03 AM
982 Views
Re: the problem is that the Mean is not going to tell us much really
- 22/11/2012 03:15:33 AM
1273 Views
I do not think you can calculate the Mean without knowing the Units of Power
- 22/11/2012 03:53:59 AM
1071 Views