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October 26, 2021, 03:29:30 am

### AuthorTopic: VCE General & Further Maths Question Thread!  (Read 528803 times) Tweet Share

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#### S_R_K

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2640 on: September 22, 2021, 04:45:46 pm »
+2
Hi, is time considered a discrete or continuous variable?

It depends upon how the data is recorded. If the values are recorded with infinitesimal precision (ie. with infinitely long decimals like 1.4142135...) then it is a continuous variable. If the values are recorded in discrete chunks (ie. to the nearest hour or to the nearest day), then it is a discrete variable. On VCAA exams, the way in which the data is recorded is included in the question.

Can someone help me with what a "three-median line" is and how this is different to median smoothing? There was a question about 3-median line in the vcaa 2011 exam but I'm not sure if it's still relevant to the current study design. Thanks

It's a linear regression method (ie. trying to achieve a similar sort of thing to the least-squares regression method that you'll be more familiar with) using the median of three equal chunks of data. It is not a technique used to smooth each data point. It is no longer part of the study design.

#### valjaybj

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2641 on: September 22, 2021, 07:31:44 pm »
0
Thank you!!!!

#### plato

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2642 on: September 24, 2021, 11:18:50 pm »
0
Hi, is time considered a discrete or continuous variable?
Continuous, as is evident in the sweeping second hand on an analog clock.

#### plato

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2643 on: September 24, 2021, 11:20:50 pm »
0
Can someone help me with what a "three-median line" is and how this is different to median smoothing? There was a question about 3-median line in the vcaa 2011 exam but I'm not sure if it's still relevant to the current study design. Thanks
The three median line is not in the current study design that commenced in 2016. You can ignore it. It is not the same as tmedian smoothing.

#### simsgrove

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2644 on: October 02, 2021, 11:16:42 am »
0
Looking for sols or answers for Further Maths NHT 2021   Anyone?

#### simsgrove

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2645 on: October 02, 2021, 11:17:19 am »
0
Looking for sols or answers for Further Maths NHT 2021   Anyone?

#### somethingeevee

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2646 on: October 02, 2021, 01:15:29 pm »
0
Looking for sols or answers for Further Maths NHT 2021   Anyone?

Found some solutions on youtube for exam 1 (check the description box to see any changes/updates):

#### ThatKid690

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2647 on: October 02, 2021, 02:19:48 pm »
0
Looking for sols or answers for Further Maths NHT 2021   Anyone?

I did the exam, so I can help you with any questions if you want
Goals:
2021: Business Management (48), Further Maths NHT (48)
2022: English (45), Physics (45), Methods (48), Spesh (46)

Actual:
Further Maths NHT (49)

#### Chocolatepistachio

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2648 on: October 09, 2021, 10:09:33 pm »
0
how do you do this question
It is claimed that 3 times as many students pass a unit than fail. If 200 student outcomes are observed, what is the expected number of passes if the claim is correct.

#### fun_jirachi

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2649 on: October 10, 2021, 12:39:27 pm »
+2
If the claim is correct, then for every four students, three pass.

Then, since we have 200 students, we would have three-quarters passing. How many is that?

Might also help to point out exactly what part you're stuck on in future.
Spoiler
HSC 2018: Mod Hist [88] | 2U Maths [98]
HSC 2019: Physics [92] | Chemistry [93] | English Adv [87] | 3U Maths [98] | 4U Maths [97]
ATAR: 99.05

UCAT: 3310 - VR [740] | DM [890] | QR [880] | AR [800]
Subject Acceleration (2018)
UCAT Question Compilation/FAQ (2020)

#### M-D

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2650 on: October 11, 2021, 07:14:07 am »
0
Hi all,
I need some assistance with Further Math VCAA 2007 Exam 1 Module 3: Graphs and relations Question 9.
I have used the gradient formula to calculate the value of k=2. The correct answers is k=1. How is that possible?
Thanks

#### fun_jirachi

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2651 on: October 11, 2021, 11:37:14 am »
+3
If the function is $Z = 2x +2y$, then the maximum value occurs everywhere on the boundary $x + y \leq 100, x \in [50, 100]$. You are told that $Z$ takes a maximum only at $(100, 0)$.

Hope this helps
« Last Edit: October 11, 2021, 11:39:29 am by fun_jirachi »
Spoiler
HSC 2018: Mod Hist [88] | 2U Maths [98]
HSC 2019: Physics [92] | Chemistry [93] | English Adv [87] | 3U Maths [98] | 4U Maths [97]
ATAR: 99.05

UCAT: 3310 - VR [740] | DM [890] | QR [880] | AR [800]
Subject Acceleration (2018)
UCAT Question Compilation/FAQ (2020)

#### Commercekid2050

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2652 on: October 13, 2021, 05:42:38 pm »
0
Hello,

My question relates to some of the earlier questions asked.

This relate to graph and relation. How does the sliding method work. I have asked my teacher but still it does not make sense.

Thank you
Class of 2021-
English
Accounting
Economic
Further Math
Math Method

#### Tjsdn

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2653 on: October 13, 2021, 09:04:51 pm »
0
Our school only though us cores and modules 1(matrices) and 2(network).
However, I found module 3(geometry and measurement) easier than module 2(network).
Am I allow to complete modules 1 and 3 instead of module 2?
I asked my school teacher and they say that I should stick with the modules that I learned because it will stuff everyone's score. I don't get why that will stuff everyone's score.
Can somebody tell me the reasons and why I should stick with modules I learned at school? (I'm 100% sure I will do better if I do module 3 because I always get 100% on the practice exam if I pick modules 1 and 3.)

#### valjaybj

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##### Re: VCE General & Further Maths Question Thread!
« Reply #2654 on: October 16, 2021, 02:01:12 pm »
0
Our school only though us cores and modules 1(matrices) and 2(network).
However, I found module 3(geometry and measurement) easier than module 2(network).
Am I allow to complete modules 1 and 3 instead of module 2?
I asked my school teacher and they say that I should stick with the modules that I learned because it will stuff everyone's score. I don't get why that will stuff everyone's score.
Can somebody tell me the reasons and why I should stick with modules I learned at school? (I'm 100% sure I will do better if I do module 3 because I always get 100% on the practice exam if I pick modules 1 and 3.)

Hey! I don't think choosing another module will impact others' scores (that's not how it works). The reason people recommend sticking with the modules you learned at school is because generally that's what students feel most confident in (obviously because you know the content and have been formerly assessed on those areas already in your sacs). But if you feel more confident in module 3 than module 2 then I would say go for it - you want to maximise the marks you'll get on the exam. Hope this helps!