SIMULATIONS

=Writing up a Simulation=

The acronym TTRC is used to remind us of the parts of the simulation

C alculation
__Tool__: State what you are using to create randomness e.g. calculator, dice, coin, spinner. Turn your probability into a fraction. This dictates the range of random numbers generated. State what the numbers stand for. e.g. P(rain) = 0.45. This equals 9/20. Generate random numbers 1-20. 1-9 stand for rain, 10-20 stand for no rain. e.g. P(twins) = 7%. This equals 7/100. Generate random numbers 1-100. 1-7 stand for twins, 8-100 stand for **not** twins.

__Trial__: State what is involved in one trial. State how many trials are required. e.g. "complete the set" style questions, one trial may involve generating numbers until each one has appeared at least once. Many simulations involve "if" scenarios. e.g. Tennis serves - generate a number to see if the first serve goes in. **If it doesn't**, then generate a number for the second serve. **If the first serve does** go in, a second number is not needed.

__Results:__ Make a table of your results. Explain any notation e.g. "if the serve goes in, I use a tick, if it goes out I use a cross"

__Calculation__: Answer the question! You may need to average the results of each trial or make a fraction to create a probability...it depends on what you were asked for.