Re: Skewness problem
- To: mathgroup at smc.vnet.net
- Subject: [mg62979] Re: [mg62944] Skewness problem
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Sat, 10 Dec 2005 06:02:49 -0500 (EST)
- Reply-to: hanlonr at cox.net
- Sender: owner-wri-mathgroup at wolfram.com
The distribution and statistics of the data is independent of the order of the
data.
Needs["Statistics`DescriptiveStatistics`"];
data={0,7,7,6,6,6,5,5,4,1};
Skewness[data]==Mean[(data-Mean[data])^3]/
StandardDeviationMLE[data]^3
True
Bob Hanlon
>
> From: "Klaus G." <Karl_boehme_9 at msn.com>
To: mathgroup at smc.vnet.net
> Date: 2005/12/09 Fri AM 05:10:25 EST
> Subject: [mg62979] [mg62944] Skewness problem
>
> Skewness[ {0, 7, 7, 6, 6, 6, 5, 5, 4, 1}] results in -1.04137.
>
> Reversing the data to {1,4,5...} I expected a different skewness,
> because the "tails" are reversed.
> But again I get -1.04137.
> Is there an error in reasoning?
>
> Klaus G.
>
>