I do not believe that any of those calculations are based on the pdf, frequency of occurrence-histogram. This, (1, 2,2, 4, 2,5,4) and not this (1,3, 0,2,1). The latter are the frequencies of occurrence for 1,2,3,4,5.
John Hunter wrote: > On Tue, Dec 1, 2009 at 6:32 AM, Wayne Watson > <sierra_mtnv...@sbcglobal.net> wrote: > >> Is there some statistics function that computes the mean, std. dev., >> min/max, etc. from a frequency distribution? >> > > numpy has many functions for basic descriptive statistics. If "data" > is an array of your data, you can do (import numpy as np) > > mean: np.mean(data) > median: np.median(data) > standard deviation: np.std(data) > min: np.min(data) > max: np.max(data) > > In scipy.stats, there are many more (skew, kurtosis, etc...) See > also, this example: > > > http://matplotlib.svn.sourceforge.net/viewvc/matplotlib/trunk/py4science/examples/stats_descriptives.py?view=markup&pathrev=4027 > > JDH > > -- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet The popular press and many authorities believe the number of pedofiles that prowl the web is 50,00. There are no figures that support this. The number of children below 18 years of age kidnapped by strangers is 1 in 600,000, or 115 per year. -- The Science of Fear by D. Gardner Web Page: <www.speckledwithstars.net/> ------------------------------------------------------------------------------ Join us December 9, 2009 for the Red Hat Virtual Experience, a free event focused on virtualization and cloud computing. Attend in-depth sessions from your desk. Your couch. Anywhere. http://p.sf.net/sfu/redhat-sfdev2dev _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
