Data Summarisation with R

Hi all, this section is about data summarisation using R codes. Examples are:

• mean
• median
• range
• var
• sd
• summary

# let's store digits 1 to 11 into x
x <- 1:11
mean(x)

## [1] 6

median(x)

## [1] 6

range(x)

## [1]  1 11

var(x)

## [1] 11

sd(x)

## [1] 3.316625

# the five number summary on x
summary(x)

##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##     1.0     3.5     6.0     6.0     8.5    11.0

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