ex

1.introduction

we are analysing data from somewhere

2.data

x=c(80,90,76,34,29,90,10,49,87,20,90,40,60,70,78,89,89,90,50,87,50,98)
mean(x)

## [1] 66.18182

sd(x)

## [1] 26.62014

median(x)

## [1] 77

3.analysis