Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread Travis E. Oliphant
Gabriel Gellner wrote: Some colleagues noticed that var uses biased formula's by default in numpy, searching for the reason only brought up: http://article.gmane.org/gmane.comp.python.numeric.general/12438/match=var+bias which I totally agree with, but there was no response? Any reason for

Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread David Cournapeau
On Wed, Oct 15, 2008 at 11:45 PM, Travis E. Oliphant [EMAIL PROTECTED] wrote: Gabriel Gellner wrote: Some colleagues noticed that var uses biased formula's by default in numpy, searching for the reason only brought up:

Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread Paul Barrett
I'm behind Travis on this one. -- Paul On Wed, Oct 15, 2008 at 11:19 AM, David Cournapeau [EMAIL PROTECTED] wrote: On Wed, Oct 15, 2008 at 11:45 PM, Travis E. Oliphant [EMAIL PROTECTED] wrote: Gabriel Gellner wrote: Some colleagues noticed that var uses biased formula's by default in numpy,

Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread Scott Ransom
Me too. S On Wednesday 15 October 2008 11:31:44 am Paul Barrett wrote: I'm behind Travis on this one. -- Paul On Wed, Oct 15, 2008 at 11:19 AM, David Cournapeau [EMAIL PROTECTED] wrote: On Wed, Oct 15, 2008 at 11:45 PM, Travis E. Oliphant [EMAIL PROTECTED] wrote: Gabriel Gellner

Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread Gabriel Gellner
On Wed, Oct 15, 2008 at 09:45:39AM -0500, Travis E. Oliphant wrote: Gabriel Gellner wrote: Some colleagues noticed that var uses biased formula's by default in numpy, searching for the reason only brought up: http://article.gmane.org/gmane.comp.python.numeric.general/12438/match=var+bias

Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread Bruce Southey
Hi, While I disagree, I really do not care because this is documented. But perhaps a clear warning is need at the start so it clear what the default ddof means instead of it being buried in the Notes section. Also I am surprised that you did not directly reference the Stein estimator (your

Re: [Numpy-discussion] var bias reason?

2008-10-15 Thread Charles R Harris
On Wed, Oct 15, 2008 at 9:19 AM, David Cournapeau [EMAIL PROTECTED]wrote: On Wed, Oct 15, 2008 at 11:45 PM, Travis E. Oliphant [EMAIL PROTECTED] wrote: Gabriel Gellner wrote: Some colleagues noticed that var uses biased formula's by default in numpy, searching for the reason only brought