Muhammad
On Mon, 31 Oct 2011, R. Michael Weylandt wrote:
> I'm thinking you need to read up on what a p-value is:
> https://secure.wikimedia.org/wikipedia/en/wiki/P-value
>
> Michael Weylandt
>
> On Mon, Oct 31, 2011 at 2:51 PM, Muhammad Rahiz
> <muhammad.rahiz at ouce.ox.ac.uk> wrote:
>> Hi everyone,
>>
>> I'm trying to determine the significance of a trendline. From my internet
>> search months ago, I came across the following post. I modified tim and
>> dat for simiplicity.
>>
>> tim <- 1:10
>> dat <- c(0.17, 1.09 ,0.11, 0.82, 0.23, 0.38 ,2.47 ,0.41 ,0.75, 1.44)
>>
>> fstat <- summary(lm(dat~tim))$fstatistic
>> p.val <- 1-pf(fstat["value"],fstat["numdf"],fstat["dendf"])
>>
>> The resultant p.value is 0.261. But I want to know if this
>> value is significant and at what significance level. How do I check for
>> it?
>>
>> Thanks
>>
>> --
>> Muhammad
>>
>> ______________________________________________
>> R-help at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-help
>> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
>> and provide commented, minimal, self-contained, reproducible code.
>>
>