VCE General & Further Maths Question Thread!

[doomdestroyer]

Another question - 2012 MAV Exam 1

I thought that the way to work out these question was similar to 2011 VCAA - so you do (for Labour for example) 0.2 + 0.2 = 0.4 * 300 (initial) to work out how many people change and then do the same thing for the 2 others, giving you D not C…

I used my calculator to work out the number of votes for each party on election day.

Next: 300-210 = 90
          250-200 = 50
          140-100 = 40

Next: 90+50+40 = 180

Therefore 180 votes were changed by election day, so the answer is C.
         

[Saikyo]

Can anyone explain to me Question 8 Networks section on VCAA 2013 Exam 1? I don't understand the assessor's report explanation.

[LiquidPaperz]

i think i have asked this before. But if it is not a transition matrix what makes it different to a transition matrix other then columns adding to 1. is their still a steady state solution with a non transition matrix? what else is not a feature..

thanks

[Sunshine98]

i think i have asked this before. But if it is not a transition matrix what makes it different to a transition matrix other then columns adding to 1. is their still a steady state solution with a non transition matrix? what else is not a feature..

thanks

I don't entirely understand your question but a transition matrix must be :
1- square
2- add up to one , as u mentioned
3- include proportions( as in it has to be in decimals, which must equal to one  )
4- it should be able to be used in predictions
I think that's it , u probably already know all this , but nonetheless I hope that I helped
Oh and to the second part of ur question , no I don't think any other matrix will give a steady state - it only makes sense that way , well at least I was never told so .

[redcracker]

Another question - 2012 MAV Exam 1

I thought that the way to work out these question was similar to 2011 VCAA - so you do (for Labour for example) 0.2 + 0.2 = 0.4 * 300 (initial) to work out how many people change and then do the same thing for the 2 others, giving you D not C…

hey mate, ive done this exam and i had the same answer as you
id say the solutions are wrong
it comes down to how you interpret what a vote changing is. you and i interpreted as someone switching to another party
i think they think of it like a swing??
off the top of my head i cant think of a time vcaa has asked this type of question but ill have a looksee

tldr you are correct solutions are wrong

[LiquidPaperz]

well if you look in the matrices section of this exam http://www.vcaa.vic.edu.au/Documents/exams/mathematics/2010furmath2-w.pdf

they give a matrix G, not a transition matrix, but it seems to have a steady state (in response to part D), hows this possible?

[myanacondadont]

well if you look in the matrices section of this exam http://www.vcaa.vic.edu.au/Documents/exams/mathematics/2010furmath2-w.pdf

they give a matrix G, not a transition matrix, but it seems to have a steady state (in response to part D), hows this possible?

It is still a transition matrix. Since the columns don't add up to 1 it means the total amount of people attending will increase or decrease. Whereas if it were 1 then the total amount of people would remain the same.

[LiquidPaperz]

dont transition matrix columns have to equal 1?

or what ive learnt all year, the day before the exam gone through the window?

[Sunshine98]

well if you look in the matrices section of this exam http://www.vcaa.vic.edu.au/Documents/exams/mathematics/2010furmath2-w.pdf

they give a matrix G, not a transition matrix, but it seems to have a steady state (in response to part D), hows this possible?

Whoops never realised that , so now I'm confused
I don't understand myanacondadont , what do u mean by increase and decrease dosent it always increase and decrease regardless ?

[vididid]

hey guys,

so I've heard if you square the one step dominance you get either the two step or the final dominance? is this true?

[redcracker]

hey guys,

so I've heard if you square the one step dominance you get either the two step or the final dominance? is this true?

1 step to the power n gives n step dominance

[LiquidPaperz]

just a quick year 7 question. If a question says this is in $'000s, does this mean something that is 17.3, is in fact 173 000 ? or 173 00 ? just a bit unsure. And how are we meant to enter it and express is, in the 173000 form or 17.3 form ? this was on one of the vcaa exams in the past so just clearing up on it.

[Zealous]

just a quick year 7 question. If a question says this is in $'000s, does this mean something that is 17.3, is in fact 173 000 ? or 173 00 ? just a bit unsure. And how are we meant to enter it and express is, in the 173000 form or 17.3 form ? this was on one of the vcaa exams in the past so just clearing up on it.

Well, the question would be saying that the numbers given are in thousands, so 17.3 would correspond to 17,300.

I think.

[LiquidPaperz]

is 000 thousands or hundreds? 0 units, 00 tens, 000 hundreds?

[rpcod]

I just wanted to know, do I have to do the same modules on both further exams??
or must i complete the same set of modules on both exams.