mu = mean(x)
variance = sd(x)^2*(n-1)/n
創建數據集
mu_boot = c()
建立循環
for (i in 1:1000){
y = rnorm(n,mu,sqrt(variance))
mu_boot[i] = mean(y)
variance_boot[i] = sd(y)^2*(n-1)/n
}
求置信區間
quantile(mu_boot,c(0.025,0.975))
quantile(variance_boot,c(0.025,0.975))