Methods Exam Discussion!

[GoodGod]

I know for sure I got the Type of turning point wrong. I wrote inflection when I clearly calculated the gradient but still messed it up.
Would I get 1 mark because I used a table? Even though half of that table is incorrect?
Also would I get 1 mark deducted because I wrote 4/10 instead of 2/5 for the donut question?

I feel like I did ok in other questions, just these two that I completely messed up

[GoodGod]

I know for sure I got the Type of turning point wrong. I wrote inflection when I clearly calculated the gradient but still messed it up.
Would I get 1 mark because I used a table? Even though half of that table is incorrect?
Also would I get 1 mark deducted because I wrote 4/10 instead of 2/5 for the donut question?

I feel like I did ok in other questions, just these two that I completely messed up

urgggh I could have gotten everything right if I only double checked that answer.. I accidently mistake the gradient for the actual y value.... I hope I make no mistakes tomorrow in Exam 2 to compensate for this loss

[Riley Taylor]

what did u guys get for the glazed doughnut question( in terms of g)?

First time posting so sorry if this isn't formatted right or something.

I think it is (6-g)/6

As glazed donuts make up 3/10 of the total 20, we can see there are 6 total glazed donuts.

If the amount of glazed donuts in A is g, then it is 6-g in B (I might've mixed up A&B sorry)

Pr(B|G)
=Pr(BintersectG)/Pr(G)
=(.5/10)*(6-g)/(3/10)
=(.5/10)*(6-g)*10/3
= (6-g)/6

I'm no genuies so it might be wrong though

[Riley Taylor]

Did anyone get q is between 0 and 1 not including 1 for the second part of that question?

Considering it asked for when the line had 2 points of intersection I think it can be (-1,1)/{0}. It is noted in the question 0 is not in the domain of q and for -1 and 1 there is only 1 point of intersection

[Riley Taylor]

What do you think the score range for 2021 grade distribution is?

Looking at previous grade distributions, mean bounces around 40 and standard deviation is ~18. I wouldn't imagine this one is too different.

[charmingcloud]

Urgh I think I read that question as 'at least one point of intersection'

...rip my one mark

[RaspberryTau]

Urgh I think I read that question as 'at least one point of intersection'

...rip my one mark

That’s what I thought it said.... what did that guy’s answers say? (Like second from the bottom on page two)

[Riley Taylor]

https://www.youtube.com/watch?v=2RWVC42HVfA&ab_channel=Worm%27sMathsAcademy

Not backing up this channel's answers but they got the only upload of the exam I could find. Scrub through the video to see the questions

[kailesh]

Hey guys for the second last question when they said "define g" did we have to include the domain for theta too?

[AbdullahBakerHamdi]

Looking at previous grade distributions, mean bounces around 40 and standard deviation is ~18. I wouldn't imagine this one is too different.

40 out of what? 40%?

[Riley Taylor]

40 out of what? 40%?

Yeah 40/80, your final score is the sum of the two examiner's score

[random147]

quick q - do we need to simplify our answers for everything - like we can't leave it as 4/10 right?

[Sine]

quick q - do we need to simplify our answers for everything - like we can't leave it as 4/10 right?

Yeah in the past VCAA has said that answers should be in the most simplified form (unless they state specifically in the question that your answer should be in terms of a,b,c etc)

[Stormbreaker-X]

How did you guys go?

[Riley Taylor]

How did you guys go?

Worst fear, a few stupid errors on easy questions