[R] Regression Problem for loop
David Winsemius
dwinsemius at comcast.net
Thu Nov 27 15:49:12 CET 2008
Have you looked at results of str on a regression object? I would not
think that there would be a single p.value associated with such a
beast, but that there might be if you examined individual coefficients.
? coefficients
?coef
--
David Winsemius
On Nov 27, 2008, at 4:03 AM, ales grill wrote:
> Dear all,
> I have wrote a code for a linear regression. I want to
> write a loop for so, that I can get estimate for pavlues for six
> predictors.
> But I am getting for estmate for only last one. How can I get
> pvalues for
> all my predictors in a loop??
>
> Anticipating your help
> Thanks
> Ales
>
>
>
>
>> mat<-matrix(rnorm(36),nrow=6)
>> mat
> [,1] [,2] [,3] [,4]
> [,5] [,6]
> [1,] 1.10536338 -0.7613770 -1.7100569 -1.8762241 -0.36579280
> 0.6465219
> [2,] -1.34836804 -0.2174270 -0.1153477 -0.1727683 -1.88406206
> 1.7484955
> [3,] 0.96814418 -2.1483727 0.5839668 -1.2361659 0.04592844
> 1.9937995
> [4,] 0.01960219 -1.2339691 0.8290761 0.1002795 -0.15952881
> 0.3969251
> [5,] 1.62343073 1.3741222 -1.2045854 0.4180127 -0.09898615
> 1.3575119
> [6,] -0.95260509 -0.1522824 -1.4257526 1.0057412 -1.20068336
> -0.4306761
>> res<-rnorm(6)
>> res
> [1] 0.2045252 -0.9824761 0.7727004 0.6439993 1.8005737 1.0167214
>>
>> pval<-NULL
>>
>> for(i in c(1:6))
> + {
> + reg<-lm(res~mat[,i])
> + reg
> + pval[i]<-reg$p.value
> + }
>> pval
> NULL
>> reg
>
> Call:
> lm(formula = res ~ mat[, i])
> Coefficients:
> (Intercept) mat[, i]
> 0.8195 -0.2557
>
> [[alternative HTML version deleted]]
>
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