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2001 Dec 09
1
Help for Power analysis
...//www2.tltc.ttu.edu/Westfall/images/5347/power_analysis_of_anova_f_test.htm
# and Cohen,J (1977). Statistical Power Analysis for Behavioral
Sciences.
#New York: Academic Press.
#Asst. Prof. Nikom Thanomsieng. 29/09/2000
#Department of Biostatistics & Demography. Faculty of Public Health.
#Khon Kaen University. Thailand.
#Email: nikom at kku.ac.th
#Modify data value of the first two line
x1 <- c(6,9)
x2 <- c(6,6)
nc <-cbind(x1)
nr <-rbind(x2)
data1 <- rbind(x1,x2)
chi2<- chisq.test(data1,correct=F)$statistic
Ntotal<-sum(data1)
df<- ncol(nc-1)*nrow(nr-1)
ifelse(df==1,w...
2000 Mar 07
3
set_seed
...seed in R before this command
>B <- 10
>x <- rnorm(15)
for (i in 1:B)
{boot.sample <- print(sample(x,replace=T))
}
...
>
for reason of stable of data output. How I do ?
Best Regards,
Nikom Thanomsieng
Department of Biostatistics & Demography,
Faculty of Public Health,
Khon Kaen University, Thailand.
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