VCE Further Maths Exam 2 - 04/11/19 - Discussion/Questions/Solutions

[pugs]

I'm not amazing at further, but I don't think r values have anything to do with residuals (or at least not much to do with it).
We were looking at the distribution of the dots on the graph, and we can see that the dots followed a parabolic shape.
Just a note that if there is a clear pattern of some sort, then the association will be non-linear , vise versa for no clear pattern.

From the get go, once you saw the residual graph, you would see that it is non-linear (because there was a pattern). The second question asked that it did not support the assumption of question 1 (which, I'm pretty sure any questions that ask 'what is the assumption?' will always be that it is linear), so you would know that it wouldn't be linear because it stated that it didn't support the assumption.
I got 105-102 = 3 for the residual

o ok

what i was referring to was how i thought the relationship between the two variables is linear because the r value measures the strength and direction of a linear relationship between two variables and it was very high (0.966) so i figured that the residual plot had to relay the same information - stumped agh

[Jashy]

what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??

Did everyone get 40% ??

[Sai Ramishetty]

what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??

Did everyone get 40% ??

Isn’t it 60%?
0.1(600) +0.2(600)= 180
180/300*100= 60%

[arielzel1]

what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??

Did everyone get 40% ??

From memory I got 180/300= 60%

[Nexica]

what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??

Did everyone get 40% ??

60%

[Jim_Bob]

60%

Indeed it is

[maths_genius246]

hey guys
Just wondering if getting a 40/40 on exam 1 and a 58/60 on exam 2 will result in a 45 ss raw???

[Nexica]

hey guys
Just wondering if getting a 40/40 on exam 1 and a 58/60 on exam 2 will result in a 45 ss raw???

depends on your ranking/cohort
if you're rank 1 that'd probably be ~48 or possibly 49

[yourfriendlyneighbourhoodghost]

What did you guys get for core when it asked for the number of ays the maximum temp was less than the median of the min? I got 1

Also what'd you guys get for the finance question for the total interest (the reducing balance loan of 50000, fortnightly

I got 1 too, also got somewhere in the 40000

[Jim_Bob]

What do we think the A+ cutoff will be for both Exam 1 and Exam 2?
I personally think they'll be lower than last years as the questions asked were quite different. Different in that previous years' questions were worded more simpler and were essentially much easier

[Pabloscopy]

for the residual question in core, did anyone also say that the assumption was that the relationship was non-linear, but it was wrong because the association is actually linear? (the r value ~0.966 is v high which means that it's linear - i didn't include this in the answer by the way but for reference)

I wrote that it had a pattern, thus it was non-linear. I think that there was a parabolic pattern.

[Pabloscopy]

What do we think the A+ cutoff will be for both Exam 1 and Exam 2?
I personally think they'll be lower than last years as the questions asked were quite different. Different in that previous years' questions were worded more simpler and were essentially much easier

Hopefully. My only hope of gettinh 40 now is that the state in general didn't do as well as last year and that my cohort did well. But one can only hope in this circumstances

[maths_genius246]

What do we think the A+ cutoff will be for both Exam 1 and Exam 2?
I personally think they'll be lower than last years as the questions asked were quite different. Different in that previous years' questions were worded more simpler and were essentially much easier

For Exam 1 the A+ cut off will most likely be 37/40 as it was a fairly easy exam.
For Exam 2 however the A+ cut off will probably be 56/60 as it was fairly 'different' from past years.

[peds01]

For those who got around 12000 for the crashing question in the Networks section, did you take into account how decreasing the duration of the activities on the critical path created other critical paths as well. Taking the other activities into account I got the completion time of 31 weeks with $10500 I think. Might be wrong and not absolutely certain I tested every possibility properly.

Also for the second last question, did you guys get 29 weeks for the overall minimum completion time with crashing?

[peds01]

what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??

Did everyone get 40% ??

I think I got 40% but seems like I might've made a mistake from what others here are saying