R random number

#returns one decimal number between 5 and 7.5
#first argument is the number of numbers to generate
#second and third are the lower and upper limits
x = runif(1, 5.0, 7.5)

Generate numbers in distribution r

> rnorm(1)    # generates 1 random number
[1] 1.072712
> rnorm(3)    # generates 3 random number
[1] -1.1383656  0.2016713 -0.4602043
> rnorm(3, mean=10, sd=2)    # provide our own mean and standard deviation
[1]  9.856933  9.024286 10.822507

Source: datamentor.io

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