Repetition

The function replicate(nrep, expression) repeats the expression provided nrep times.

For example, replicate(10, mean(rnorm(100))) reads: ‘Draw 100 values from a normal distribution with a mean of 0 and a standard deviation of 1 (the default values of rnorm(n, mean, sd)), calculate the mean of these 100 values, and do all that 10 times.’

YOUR TURN:
In your local exercise script:
1. Repeat 1000 times the calculation of the mean of 10 values drawn from a uniform distribution between 0 and 10.
2. Repeat 100 times the calculation of the mean of 50 values drawn from a normal distribution with a mean of 10 and a standard deviation of 5.
3. Make a histogram of your results for each task. Are the distributions looking as expected?

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