## June 14, 2011

### ST114 Games & Decisions Exam Reflection

I feel I’ve become both more relaxed and more flippant as the exams went on – I also feel that generally I performed better on the later ones. Having questions in which a girl believes she can predict her marks down to the last percentage point are more fun to do.

This was one of the exams, like Analysis, in which I did more than the bare minimum of questions: i.e. all 3. Unlike Analysis I was able to give complete answers to all three.

I began confidently with the question on Games, but couldn’t remember the exact graph method, flipped and flopped around, tried to work out the final answer a different way, got something else, gave up and moved on.

I then moved back to answer the first question, drew a tiny decision tree, and gave an answer on discounting a 69 vs a 70, assuming you have your estimated marks perfect. This part was fun.

I then rushed through the second, trying to recall definitions, and giving an example of a man who is certain that any given coin comes up both heads and tails at the same time (he’s wrong). For the last part, I misread min as max (NTS: don’t do that), forgot how the log function worked, forgot how functions in general worked (I saw min(log(r),100) as min(log(min(r,100)),100)), but I think I was able to sort it out. Narrowly finished on time. Enjoyed the exam. Probably worse than Prob, but around there. More fun, though.

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