[R] extracting p-values in scientific notation
Rolf Turner
rolf.turner at xtra.co.nz
Mon Oct 3 10:25:46 CEST 2011
Isn't it true that 0 < 2.2e-16?
cheers,
Rolf Turner
On 03/10/11 20:53, Liviu Andronic wrote:
> Dear all
> How does print.htest display the p-value in scientific notation?
>> (x<- cor.test(iris[[1]], iris[[3]]))
> Pearson's product-moment correlation
>
> data: iris[[1]] and iris[[3]]
> t = 21.65, df = 148, p-value< 2.2e-16
> alternative hypothesis: true correlation is not equal to 0
> 95 percent confidence interval:
> 0.8270 0.9055
> sample estimates:
> cor
> 0.8718
>
> Above the p-value comes as '< 2.2e-16', while inspecting the object I
> get a good old '0'.
>> x$p.value
> [1] 0
>
> I tried to inspect print.htest but couldn't find it. I also played
> with format, round and the like to no avail. Any pointers?
>
> Regards
> Liviu
>
>
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