Displaying 5 results from an estimated 5 matches for "bcanon".
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canon
2003 Aug 04
0
Feedback Bootstrapping
Dear experienced R-users,
I am having some probably trivial trouble estimating the confidence interval
for the difference of two group means, with groups been of unequal sample
size. I am using the "Bootstrap" package and the function
"bcanon"(bcanon(x, nboot, theta, ...,alpha=c(0.025, 0.05, 0.1, 0.16, 0.84,
0.9, 0.95, 0.975)) for Nonparametric BCa confidence limits.
The data is the following:
> distland
$scland
[1] 1118.0 707.1 2121.3 1802.8 2000.0 10606.6 10977.2
$obland
[1] 4717.0 3605.6 10049.9 9513.1 1802.8 1118.0 500....
2004 Apr 27
1
bcanon bug???
> in some cases the bootstrap estimates for the
> highest confidence level are obviously wrong:
> 0.05/x -1.33318711781158
> 0.025 -1.09386961626344
> 0.05 -0.868768454819694
> 0.1 -0.652649120212949
> 0.16 0.0453058935697044
> 0.84 0.104645679223495
> 0.9 0.213385388775905
> 0.95 0.368838243723381
> 0.975 0.615868703042345
> 1-0.05/x
2003 Oct 08
0
Bootstrap Question
I have a question regarding bootstrap coverage. I am trying to understand the benefits of using the bootstrap for small sample sets. To do this I created a normal population and then picked 10 from the populations and applied both traditional statistical methods and the Bootstrap (bcanon, 5000 bootstrap samples) to calculate a 95% confidence interval of on the mean. I saved the width of the confidence interval and how many misses, repeated this 1000 times, and output the summary on the CI width and the number of misses for each method (actual script below) . I had expected to see...
1999 Apr 08
0
Problems installing packages in FreeBSD 2.2.8 and R-0.62.2
...ile or directory
*** Error code 1
Stop.
cp: *.so: No such file or directory
R
data
help
>>> Building help pages for package `bootstrap'
Formats: text html latex
abcnon text html latex
abcpar text html latex
bcanon text html latex
bootpred text html latex
bootstrap text html latex
boott text html latex
crossval text html latex
jackknife...
2007 Sep 04
1
bootstrap confidence intervals with previously existing bootstrap sample
Dear R users,
I am new to R. I would like to calculate bootstrap confidence intervals
using the BCa method for a parameter of interest. My situation is this: I
already have a set of 1000 bootstrap replicates created from my original
data set. I have already calculated the statistic of interest for each
bootstrap replicate, and have also calculated the mean for this statistic
across all the