Arguments

Arguments

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args()

rnorm() is a function that generates random variables from a normal distribution. Find the arguments of rnorm() using the args() function.

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Solution

args(rnorm)

Good job! n specifies the number of random normal variables to generate. mean and sd describe the distribution to generate the random values with.

Optional arguments

Which arguments of rnorm() are not optional?

n
mean
sd

rnorm() 1

Use rnrom() to generate 100 random normal values with a mean of 100 and a standard deviation of 15.

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Solution

rnorm(100, mean = 100, sd = 15)

rnorm() 2

Can you spot the error in the code below? Fix the code and then re-run it.

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Hint

Hint: In math, \(\mu\) (mu, pronounced “mew” or “moo”) is a Greek letter that stands for the mean of a distribution.

Solution

rnorm(100, mean = 100, sd = 15)

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