[R] Strange results : bootrstrp CIs

[varin sacha]

Dear R-experts,

Here below, my R code working BUT I get a strange result I was not expecting! Indeed, the 95% percentile bootstrap CIs is (-54.81, -54.81 ). Is anything going wrong?

Best,

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Score=c(345,564,467,675,432,346,476,512,567,543,234,435,654,411,356,658,432,345,432,345, 345,456,543,501)
 
Country=c("Italy", "Italy", "Italy", "Turkey", "Turkey", "Turkey", "USA", "USA", "USA", "Korea", "Korea", "Korea", "Portugal", "Portugal", "Portugal", "UK", "UK", "UK", "Poland", "Poland", "Poland", "Austria", "Austria", "Austria")
 
Time=c(1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3,1,2,3)
 
e=data.frame(Score, Country, Time)
 
 
library(boot)
func= function(data, idx) {
coef(lm(Score~ Time + factor(Country)),data=data[idx,])
}
B= boot(e, func, R=1000)
 
boot.ci(B, index=2, type="perc")
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