Simulation - Hadley Wickham

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• • Plot histogram of: • • • • Your turn 100 x mean of 10 N(0,1) 1000 x mean of 10 Unif(0, 10) 1000 x mean of 100 Unif(0, 10) 100 x mean of 1000 Unif(0, 10) What do last three examples show? Experiment with the number of samples
What your code might have looked like • qplot(replicate(100, mean(norm(10))), type="histogram") • qplot(replicate(10, mean(norm(10))), type="histogram") • qplot(replicate(1000, mean(norm(10))), type="histogram") • qplot(replicate(10000, mean(norm(10))), type="histogram") • qplot(replicate(100, mean(norm(100))), type="histogram") • qplot(replicate(100, mean(rpois(1000))), type="histogram") • qplot(replicate(1000, mean(norm(1))), type="histogram") • qplot(replicate(10000 mean(norm(1000))), type="histogram")
Page 1 and 2: Simulation Hadley Wickham
Page 3 and 4: • • • • Basics of simulatio
Page 5 and 6: Generating random numbers • runif
Page 7: Repetition • Use the replicate fu
Page 11 and 12: Dry rule
Page 13 and 14: • Functions Let us avoid repetiti
Page 15 and 16: • • • Your turn Create a func
Page 17 and 18: Your turn • Figure out how to do
Page 19 and 20: • • Another exploration How doe
Page 21 and 22: New function • sapply • Takes f
Page 23: • • • • Your turn Look at t

Simulation - Hadley Wickham

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