Simulation - Hadley Wickham

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•

Basics of simulation

Outline

Don’t repeat yourself

Exploring some theorem you should have

seen before

Exploring the behaviour of a t-test

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• • Aims Learn how to simulate data to: • • • Test your statistical intuition Perform power calculation Experiment with a new technique on known data Learn how to use functions to reduce duplication

• • • • Basics of simulation Outline Don’t repeat yourself Exploring some theorem you should have seen before Exploring the behaviour of a t-test

Page 1: Simulation Hadley Wickham
Page 5 and 6: Generating random numbers • runif
Page 7 and 8: Repetition • Use the replicate fu
Page 9 and 10: What your code might have looked li
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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