Not as easily answered as you might think... The following are from units 1/2 - so while not explicitly required in units 3/4, you should already know them and be prepared to answer these questions:
13A (except areas, I believe?)
13B
The following contains information that is explicitly required by the study design:
13B (basically only conditional probability)
13D (the formula for transformations of random variables - i.e., E[aX+b]=aE[X]+b, var(aX+b)=a^2var(X), E[X+Y]=E[X]+E[Y] for independent X and Y)
And the following contains information that I personally feel is vital to understanding everything you have to know for the study design:
13B
13C
13D
So like, the answer you're probably not hoping for: you're likely better off doing all of chapter 13. My personal opinion is that VCAA are stupid for making the cuts the way they have (to my favourite sections, too
), as they've sacrificed understanding for the "more applicable" equations. However, I guess they had to make some difficult decisions in the wake of the pandemic, so I can't get too mad...
Having said all of that - the assessable material in chapter 13 is definitely less than half the chapter. My recommendation - read over the chapter, and make sure you have an understanding of everything. Do some questions if you want to test your understanding, but for the most part don't bother - it looks like VCAA are trying to lean hard into chapters 14 and 16 and fuck the rest. So, just focus on doing chapters 14 and 16, while reading 13 and 15 for understanding. As for what you actually have to know from 13 and 15 for your exam, you can worry about covering that in class, because the answer isn't simple. You will be pleased to know, I'm sure, that chapter 17 is just straight gone - if you see anything about statistical inference, it's gone, and you can safely ignore it. More than that, understanding it isn't going to help you at all in understanding other information, so you don't need to read it for understanding's sake (but also it was also the only example of cool and interesting statistics covered in methods grrrrr, even madder what they did to specialist)
However, I want to stress this -
don't just straight skip chapter 15. Chapter 13 is one thing, because you're used to dealing with discrete data, whether you understand what that means or not. In chapter 15, you learn about what it means to deal with probability of continuous data - like heights, weights, travel time, etc. If you don't have an understanding of how this is done, trying to learn chapter 16 will be a nightmare. Feel free to not bother with answering questions in chapter 15, but make sure you understand the concepts it tries to convey
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