R Markdown

\[xbar=x/n\]

x<-c(11, 12,11,13,14,15,17,11,11)
summary(x)
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   11.00   11.00   12.00   12.78   14.00   17.00
boxplot(x)

plot(density(x))

hist(x)