Matrixes are so easy in 2009 VCAA exam??? 2010 so hard?

[marrggzz]

Have you guys noticed that?

Do you rekon they can get any harder?

[tea.squaredd]

According to my teacher who says she's quoting VCAA, VCAA are trying to make all the modules of similar difficulty so that no student is disadvantaged/advantaged from doing 'easier' modules. In the past, Matrices has been quite straightforward and they have tried to make it harder as evident in the 2010 exam.
As for getting any harder... who knows. A bit of analysis of how last year's cohort might help. If they did considerably worse, maybe they'll keep the 2010 standard until future cohorts for matrices start aceing it again.

[davidle_10]

From what I've heard, matrices will be relatively difficult and business maths will be relatively easier compared to previous years as there has been an increase in students doing matrices and a decline in students doing business maths.

[99.96]

It was kinda obvious 2010 matrices would be a lot harder than 2009.
Look at the 2009 assessment report,
"[Matrices] was very well done, with no questions having a success rate of less than 50 per cent."

While some other modules, had like 4 questions that were answered right by less than 50% of people.

Modules are supposed to be of equal difficulty, so you might as well stick with matrices

[xdecay]

Yes I noticed that too. Maybe not that difficult. But just a little bit.. tricky in terms of not falling for VCAA's trap.

[Hodgeyhodgey]

Matrices definitely appear to have more difficult/ambiguously-worded questions so I assume that trend will continue this year. As for business maths, definitely getting easier as I think 8/9 questions on last year's multiple choice exam were only the basic concepts, no tricks or difficulties at all.

[benzino]

yeah, my teacher also said matrices will no longer be as easier as it once was... so go by the 2010 vcaa exam as a guide

[Keki]

I did the 2009 VCAA exam and got 9/9 for matrices but got 1/9 for the 2010 one D: ( Probably 3/9 if i referred to the book instead of trying to recall it from memory). The business math section for 2010 VCAA exam seems like the difficulty of the 2009 VCAA matrices exam :/

[chemkid_23]

awks i switched from business to matrices for exam; hate business maths but oh well

[xdecay]

awks i switched from business to matrices for exam; hate business maths but oh well

well done on the switch. how did you go?

[chemkid_23]

for 2010 exam one got low A; exam 2 high A+
went over the mistakes and hopefully wont be forgetting them anytime soon

[xdecay]

for 2010 exam one got low A; exam 2 high A+
went over the mistakes and hopefully wont be forgetting them anytime soon

how would you know if it was high or low? did you get the statement of marks or was it just gut feeling?

[chemkid_23]

u go to vcaa website and look at grade distributions
shows u what each mark cut of was for each score so thats how

[abzzzz]

how would you guys do this?

Question 7
Each year, a family always goes on its holiday to one of three places; Portland (P), Quambatook (Q) or
Rochester (R).
They never go to the same place two years in a row. For example, if they went to Portland one year, they would
not go to Portland the next year; they would go to Quambatook or Rochester instead.
A transition matrix that can be used to model this situation is

q7 Vcaa exam 1 for matrices

[MJRomeo81]

I've done that question before.

Basically if the family goes to P this year, they cannot go to P next year and so on.

Start by eliminating transition matrices that fail to depict this situation. If you look at A, you will see that for any given year, the family will always return to the SAME exact location next year, 100% of the time. Rule out A.

For B, if the family go to R one year, they will 100% return to R next year. Rule out B.

For C, if a family goes to Q one year, they have a 40% chance of returning next year. Rule out C.

For D, the transition columns do not add to 1, so therefore it is an invalid transition matrix. Rule out D.

For E, there is 0% chance that a family can spend two years in the exact same location. This is true for all destinations. Therefore E is correct.