Re: Randomness Test

*To*: mathgroup at smc.vnet.net*Subject*: [mg58029] Re: Randomness Test*From*: Bill Rowe <readnewsciv at earthlink.net>*Date*: Thu, 16 Jun 2005 05:37:40 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

On 6/15/05 at 5:58 AM, rks74us at yahoo.com (Dave miller) wrote: >Okay, I have a sequence of numbers as below. When i do a scatter >plot, there seems to be a bias toward positive numbers. Although >when I run some tests like "runs test", it shows me that the >numbers are random. If that is the case, then when i plot the >numbers on a scatter plot, should'nt they be equally divided up and >below the x axis? My goal is to prove that that there is a >significant bias towards positive numbers. <list of numbers snipped> Since you list contained 9 negative numbers 6 zeros 26 positive numbers There is a clear bias toward positive numbers. A runs test looks for a sequence of the same number and isn't the right test to use to look for a preponderence of positive numbers. The sequence of positive integers is clearly not random but will have no runs and pass a runs test. -- To reply via email subtract one hundred and four