On 2012-09-20 21:07, Thomas Lumley wrote:
On Fri, Sep 21, 2012 at 6:43 AM, avinash barnwal
avinashbarnwal...@gmail.com wrote:
Hi,
http://en.wikipedia.org/wiki/Wilcoxon_signed-rank_test
We can clearly see that null hypothesis is median different or not.
One way of proving non difference is
Mohamed Radhouane Aniba aradwen at gmail.com writes:
Thank you Thomas,
So you think a t-test is more adequate to use in this case ?
Rad
No, because a t-test makes even stronger parametric assumptions.
You were given more specific advice on stackoverflow
Hi,
In Wilcoxon test , we look for medians rather than the means. Ratio of
medians should be more coherent with P value.
On Thu, Sep 20, 2012 at 6:30 PM, Ben Bolker bbol...@gmail.com wrote:
Mohamed Radhouane Aniba aradwen at gmail.com writes:
Thank you Thomas,
So you think a t-test
On Sep 20, 2012, at 02:43 , Thomas Lumley wrote:
On Thu, Sep 20, 2012 at 5:46 AM, Mohamed Radhouane Aniba
arad...@gmail.com wrote:
Hello All,
I am writing to ask your opinion on how to interpret this case. I have two
vectors a and b that I am trying to compare.
The wilcoxon test is
Hi,
http://en.wikipedia.org/wiki/Wilcoxon_signed-rank_test
We can clearly see that null hypothesis is median different or not.
One way of proving non difference is P(XY) = P(XY) where X and Y are
ordered.
On 9/20/12, peter dalgaard pda...@gmail.com wrote:
On Sep 20, 2012, at 02:43 , Thomas
On Fri, Sep 21, 2012 at 6:43 AM, avinash barnwal
avinashbarnwal...@gmail.com wrote:
Hi,
http://en.wikipedia.org/wiki/Wilcoxon_signed-rank_test
We can clearly see that null hypothesis is median different or not.
One way of proving non difference is P(XY) = P(XY) where X and Y are
ordered.
Hello All,
I am writing to ask your opinion on how to interpret this case. I have two
vectors a and b that I am trying to compare.
The wilcoxon test is giving me a pvalue of 5.139217e-303 of a over b with the
alternative greater. Now if I make a summary on each of them I have the
following
On Thu, Sep 20, 2012 at 5:46 AM, Mohamed Radhouane Aniba
arad...@gmail.com wrote:
Hello All,
I am writing to ask your opinion on how to interpret this case. I have two
vectors a and b that I am trying to compare.
The wilcoxon test is giving me a pvalue of 5.139217e-303 of a over b with the
Thank you Thomas,
So you think a t-test is more adequate to use in this case ?
Rad
On Sep 19, 2012, at 8:43 PM, Thomas Lumley tlum...@uw.edu wrote:
On Thu, Sep 20, 2012 at 5:46 AM, Mohamed Radhouane Aniba
arad...@gmail.com wrote:
Hello All,
I am writing to ask your opinion on how to
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