Displaying 1 result from an estimated 1 matches for "stomwt".
2004 Jun 25
1
trouble using boot package
Hello,
I am trying to carry out a bootstrap analysis (using the boot package) on a
table and cannot work out how to get the results I need!
I have a table ("d2") with 4 columns: "ID_code", "Age", "Quarter" and
"StomWt". Age (0-5) and Quarter (1-4) are my strata
Therefore I wish to estimate the confidence intervals for the mean StomWt
for each Age and Quarter.
If I do this manually for each age / quarter I get the following:
> boot (d2$StomWt[d2$Age=="0" & d2$Quarter=="1"], mean,...