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#We will take sample size=30, 50 & 500 samples=9000 | |
#Calculate the arithmetice mean and plot the mean of sample 9000 times | |
s30 <- c() | |
s50 <- c() | |
s500 <- c() | |
n =9000 | |
for ( i in 1:n){ | |
s30[i] = mean(sample(data$Wall.Thickness,30, replace = TRUE)) | |
s50[i] = mean(sample(data$Wall.Thickness,50, replace = TRUE)) | |
s500[i] = mean(sample(data$Wall.Thickness,500, replace = TRUE)) | |
} | |
par(mfrow=c(1,3)) | |
hist(s30, col ="lightblue",main="Sample size=30",xlab ="wall thickness") | |
abline(v = mean(s30), col = "red") | |
hist(s50, col ="lightgreen", main="Sample size=50",xlab ="wall thickness") | |
abline(v = mean(s50), col = "red") | |
hist(s500, col ="orange",main="Sample size=500",xlab ="wall thickness") | |
abline(v = mean(s500), col = "red") |
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