Statistics function incorrectly computing median

[Miguel Garcia-Blanco]

> Are any of the licenses for any of those GPL compatible?
>

Acklam's code seems to be free: "This is a collection of m-files that I have
made and found useful. Since there is no need to re-invent the wheel, please
feel free to download them and use them as much as you like. If you have any
comments or suggestions or find any bugs, please let me know." [1]

Holtsberg's code is part of MatLinks/Chorus, an open source project. All
programs are released under the GNU General Public License. [2]

Makeig/Finelli's code is also released under the GNU General Public License.
(See the function description.)

[1] http://home.online.no/~pjacklam/matlab/software/util/index.html
[2]
http://www.koders.com/matlab/fid9DF04B498C49787536458498B2E2DECDA8D79BEE.aspx

> Any chance they permit the sample values to non-equal probabilities?
>

To the best of my knowledge, the underlying (population) probability
distribution is irrelevant. (Although, as I have said previously, whether
the population is continuous or discrete could be important.) In computing
sample quantiles, these functions act just like mean() and std(): They
compute sample statistics.

-Miguel