Suggested Answers (and Discussion) of the Further Maths Exam!

[phoebe.pilcher]

HEEECCCKKKKK I didn't do as well as I thought!!! This is scary!!! Will the next maths exam be harder or easier?
Also do both exam marks contribute towards ATAR or do they add them together?
Has any1 got any tips for my second maths exam???

[Syedali_]

HEEECCCKKKKK I didn't do as well as I thought!!! This is scary!!! Will the next maths exam be harder or easier?
Also do both exam marks contribute towards ATAR or do they add them together?
Has any1 got any tips for my second maths exam???

They both contribute 33% each
Plus just doo good on mondays exam

[phoebe.pilcher]

Thanks for that!!
has any1 got any ideas for excellent ideas to revise for Monday's exam? I worked through the revision chapters for my MC exam....

[jazzycab]

For those of you wondering about Geometry Question 8, here is my working:

So the answer is D.

[plato]

But this is not accounting for her remaining stationary for x minutes? I don't think you can use the average travel rate to find a... This question is flawed

Let's talk in terms of y and x.
The given equation for the final section is in the form y=mx+0 or y=mx (or d=kt) which, if extended, must have a "y" intercept at the origin (as, coincidentally, does the equation that represents the average speed for the entire trip).
When she is stationary, this is represented by a horizontal line with equation y=600 (or d=600) that starts at t=6 and stops at t=a.
This horizontal section must stop at the point where she again starts to move, represented by the final portion of the graph that must have a gradient of 80. Simultaneous equations will show that t=a=7.5 for the point of intersection.
Unless a=7.5 you could not get a gradient of 80 for the final section.

[ryunee]

Core Q6 is histogram , are you sure it the right question?

Ahh sorry I meant Linear Q6!

[Syedali_]

Ahh sorry I meant Linear Q6!

From the choices given u can tell n= 2 or 3

Hence u can find k ( 3 or 3/2 )

Those are your gradients , check for which graph has the correct gradient

3/2
Ans : E

[apan]

Hey Guys! I just found this and now I'm confused again about Q2 for core. If you scroll down a bit you'll see an example with 3 categories - one is age which is '18 and under' and 'over 18.' The page says that it is a nominal variable.   https://onlinecourses.science.psu.edu/stat504/?q=book%2Fexport%2Fhtml%2F1

Thoughts?

[Syedali_]

Hey Guys! I just found this and now I'm confused again about Q2 for core. If you scroll down a bit you'll see an example with 3 categories - one is age which is '18 and under' and 'over 18.' The page says that it is a nominal variable.   https://onlinecourses.science.psu.edu/stat504/?q=book%2Fexport%2Fhtml%2F1

Thoughts?

I assumed that the ages have been categorised and similar to that of post codes which are nominal , thats my argument

[samsung4545]

Glad I answered D then. Hopefully my exam nerves didn't ruin my chances of getting a 45+ if for exam 1 my mark is 37-38/40 and I am ranked number one in my cohort. 

[SexGodDosia]

Hey Guys! I just found this and now I'm confused again about Q2 for core. If you scroll down a bit you'll see an example with 3 categories - one is age which is '18 and under' and 'over 18.' The page says that it is a nominal variable.   https://onlinecourses.science.psu.edu/stat504/?q=book%2Fexport%2Fhtml%2F1

Thoughts?

Pretty sure difference is nominal is Like above, over / under an age

and ordinal would be age groups like Below 9 10-19 20-29 30-39 etc

Eg, your answer is an age group... I'm between 10-19 vs No I'm not over 50 or yes i am

[masch]

I assumed that the ages have been categorised and similar to that of post codes which are nominal , thats my argument

Don't trust American Websites....!!! I'm going with this definition  (see attachment) ...Core Question 2 ANSWER B

[apan]

Don't trust American Websites....!!! I'm going with this definition  (see attachment) ...Core Question 2 ANSWER B

This is so confusing!! Maybe vcaa will be kind and accept two answers 😕

[ayesha2011t]

This is so confusing!! Maybe vcaa will be kind and accept two answers

I doubt they'll accept 2 but maybe they can just take out the question and hence, all answers are given one mark. Ik they did this once previously

[SexGodDosia]

Don't trust American Websites....!!! I'm going with this definition  (see attachment) ...Core Question 2 ANSWER B

If you went to the link it shows the groups in a table
The ordinal variable 'age group' is created from the continuous variable 'age' using five categories:
age group = 1 if age is less than 20;
age group = 2 if age is 20 to 29;
age group = 3 if age is 30 to 39;
age group = 4 if age is 40 to 49;
age group = 5 if age is 50 or more"

You would answer you are one specific group i.e. I'm 30-39

like health i am very healthy, not healthy, low


Vs under 50 and over 50 being a yes or no answer and hence being nominal