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Do I need to show any working out for most of S1/2? watch

1. Pretty much 80% of these papers can be done directly on a graphical calculator.

I'd obviously show working out for stuff like discrete/continuous probabilities, but for anything else I don't see the need?

So for example, with distribution questions can you just state the z/t/whatever value and then the probability? Similarly for hypothesis testing, could you just state the critical values, then the z/t/whatever value and a conclusion?

Also with the contingency tables in S2, doing the entire method would use up soooo much time, it can be done on the calculator without having to copy out another table with the expected values, as the calculator can just do the calculation without them, but it also can prove the expected values too.

I know that the mark scheme states that full marks can be awarded with no method if it's not probable for the correct answer to be obtained with an incorrect method. But that's quite ambiguous as I don't really know what questions can be completed with an 'incorrect method'?

Sorry for rambling!

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Updated: February 10, 2018
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