% for melding materia is broken

[Tolmos]

Additional source for a minimum sample size of 30 being acceptable

http://sphweb.bumc.bu.edu/otlt/MPH-M...ability11.html

To be fair, here's another source stating the sample size of 30 is inane and 30 is not any form of a magic number, and that determining sample size is far more complex than that.

http://www.umass.edu/remp/Papers/Smith&Wells_NERA06.pdf

And here's a source on how to handle your statistical analysis when the sample size is greater than or less than 30

http://www.amstat.org/publications/jse/v4n3/rhiel.html