Maths Methods (Exam 1): Discussion, Questions & Potential Solutions

[TheBamboozler]

Wow, I don't think any studying could have prepared me for this. I swear question 9 looked straight out of specialist but what do I know.
Heres hoping that the B+ cut off is a 23/40 because that's probably the best I got. 
Horrible exam but I was never good at math anyway.
I'm hoping to get a 33 raw, scaled 38? I'm probably going to get 38 raw in psych and I've been getting 90% all year.
Scaling is fair.

[Bri MT]

Also, do I have to justify the fact that I have no absolutes? The domain x>1 and I thought that absolute values when integrating weren't needed since it's out of the methods study design.

Don't worry, absolute values are out of the study design

[DinWell]

Yeah, exactly, which makes me think that there must have been a more simple way of solving it. A friend was saying that you could use values found in parts a-d or something but honestly I have no idea. Guess we'll be waiting for the exam to be published :/

There was a simple way. You can use symmetry properties and the fact that it was translated by 3pi to easily find the integrals using your answers from a and b

[Mattjbr2]

Anyone know what the A+ cutoff might be? How did you guys find it in comparison to previous years? I feel like 2016 and 2017 were dead easy in comparison to this one.

[DinWell]

Anyone know what the A+ cutoff might be? How did you guys find it in comparison to previous years? I feel like 2016 and 2017 were dead easy in comparison to this one.

Imo it was comparable to 2016 and 2017. So around 34-35?

[lacitam]

lmao I knew I was fucked for this exam during reading time.

[technodisney]

The probability questions seemed way too easy. Although I could just be a big idiot.

The one with the Standard Deviation (sorry I forgot the question number) the answers I got were
part a: pr(X>6) = 1/2
part b: b=5

2 questions:
1: did I get that right?
2: Did I need to show more working if it is right?

[DinWell]

The probability questions seemed way too easy. Although I could just be a big idiot.

The one with the Standard Deviation (sorry I forgot the question number) the answers I got were
part a: pr(X>6) = 1/2
part b: b=5

2 questions:
1: did I get that right?
2: Did I need to show more working if it is right?

I got b=-1/2. Do you remember how many marks they were?

[TheBamboozler]

part b: b=5

Didn't that question say Z < b? In that case it wouldn't be 5 because it would have to be standardized as a result. I also got pr(x>6) = 0.5 as well.

[passbleh24]

The probability questions seemed way too easy. Although I could just be a big idiot.

The one with the Standard Deviation (sorry I forgot the question number) the answers I got were
part a: pr(X>6) = 1/2
part b: b=5

2 questions:
1: did I get that right?
2: Did I need to show more working if it is right?

I got b = -1/2
Mean was 6 SD was 2. Half SD (1) up is 7.
Z greater than 0.5 = Z less than - 0.5 .. Not too sure

[Dais_Deorum]

Imo it was comparable to 2016 and 2017. So around 34-35?

Disagree with that. I think you'll find that very few students will get full marks on the last 3/4 pages, whilst in 2016/17, there were only a couple of questions where the majority got full marks.

[technodisney]

Didn't that question say Z < b? In that case it wouldn't be 5 because it would have to be standardized as a result. I also got pr(x>6) = 0.5 as well.

I got b = -1/2
Mean was 6 SD was 2. Half SD (1) up is 7.
Z greater than 0.5 = Z less than - 0.5 .. Not too sure

Wait a sec... *facepalm* You are right
The question was Pr(X>7) = Pr(Z<b) find b
I read it as Pr(X>7) = Pr(X<b) find b

I knew it seemed waaaay to easy. haha.

[DinWell]

Disagree with that. I think you'll find that very few students will get full marks on the last 3/4 pages, whilst in 2016/17, there were only a couple of questions where the majority got full marks.

What do you think the cutoff will be? Personally, I thought 2017 was slightly harder that this years. I'm in no way stellar at methods but I think I got full marks for the last 3/4 pages.

[petersenge]

Imo it was comparable to 2016 and 2017. So around 34-35?

No way the exam 1s from the last years are so much easier than this years one. I was aiming for low 30s, I ended up getting mid 20s for this exam... Bummer. Oh well, only thing left to do is try and smash tomorrow's one :/

[DinWell]

No way the exam 1s from the last years are so much easier than this years one. I was aiming for low 30s, I ended up getting mid 20s for this exam... Bummer. Oh well, only thing left to do is try and smash tomorrow's one :/

Every year people say that their exams are harder than previous years cause they do it under stressful exam conditions. It would be great if someone who didn't do methods this year gave their opinion on this years exam difficulty.