VCE General & Further Maths Question Thread!

[ayesha2011t]

Would the variable 'roadworthiness' (i.e. either roadworthy or unroadworthy) be classed as nominal or ordinal data?

Thanks 

Nominal, don't think it can be ordered

[powergab]

Hi!

With the financial solver do you always round? So if you get a future value that you have to put in the present value box do you use the whole number or the rounded number?

Thanks

[KDB]

Hi!

With the financial solver do you always round? So if you get a future value that you have to put in the present value box do you use the whole number or the rounded number?

Thanks

Use exact values, only round for the final answer - and to however many decimal places that it says.

[sinatra]

Hello everybody!
If I am hoping for a 35 study score, roughly what mark out of the 40 should I be aiming for on the exam 1?
Thanks!

[Chow12]

The seasonal index for heaters in winter is 1.25 to correct for seasonality, the actual heater sales in winter should be? A) reduced by 20% B)increased by 20% C) reduced by 25% D) increased by 25% E) reduced by 75%

[ayesha2011t]

The seasonal index for heaters in winter is 1.25 to correct for seasonality, the actual heater sales in winter should be? A) reduced by 20% B)increased by 20% C) reduced by 25% D) increased by 25% E) reduced by 75%

Do 1/1.25= 0.8
Meaning it is reduced by 20% so A is the answer

[powergab]

Use exact values, only round for the final answer - and to however many decimal places that it says.

Thanks

[haxor4chan]

Is it true we have to use pen on the exam 2?

[QueenSmarty]

Is it true we have to use pen on the exam 2?

Yes, your answers will show up more clearly when your exam is scanned and marked

[clarke54321]

Is it true we have to use pen on the exam 2?

I know people who just used really dark pencil, which also worked.

[ayesha2011t]

Interest earned is just FV - PV yeah??

[haxor4chan]

In regards to rounding again, im so confused on what to do?!?
Our teacher sent us this from VCAA: "In general, only unrounded answers should be used for subsequent calculations. However, rounded answers should be used in financial modelling if this answer represents a physically payable amount. Dollar values can only be ‘paid’ if they are at most 2 decimal places. If a financial solver returns, for example, a repayment amount of $156.7643256 then this must be rounded to $156.76 for any future calculations using the solver. This is different to calculations in other areas, for example, geometry where it is appropriate to use multiple decimal places for calculated quantities that are used in future calculations."
So do we round or not in financial calculator when taking fv to pv for another calculation?

[QueenSmarty]

In regards to rounding again, im so confused on what to do?!?
Our teacher sent us this from VCAA: "In general, only unrounded answers should be used for subsequent calculations. However, rounded answers should be used in financial modelling if this answer represents a physically payable amount. Dollar values can only be ‘paid’ if they are at most 2 decimal places. If a financial solver returns, for example, a repayment amount of $156.7643256 then this must be rounded to $156.76 for any future calculations using the solver. This is different to calculations in other areas, for example, geometry where it is appropriate to use multiple decimal places for calculated quantities that are used in future calculations."
So do we round or not in financial calculator when taking fv to pv for another calculation?

I would say we round it first before doing any another calculation, but I'm not entirely sure

[Cornrow Kenny]

The seasonal index for heaters in winter is 1.25 to correct for seasonality, the actual heater sales in winter should be? A) reduced by 20% B)increased by 20% C) reduced by 25% D) increased by 25% E) reduced by 75%

The way I do it is, you need to reduce 1.25 to 1... So you need to decrease it by 0.25. 0.25/1.25 = 20%, therefore A, reduce by 20%. 

[ayesha2011t]

In regards to rounding again, im so confused on what to do?!?
Our teacher sent us this from VCAA: "In general, only unrounded answers should be used for subsequent calculations. However, rounded answers should be used in financial modelling if this answer represents a physically payable amount. Dollar values can only be ‘paid’ if they are at most 2 decimal places. If a financial solver returns, for example, a repayment amount of $156.7643256 then this must be rounded to $156.76 for any future calculations using the solver. This is different to calculations in other areas, for example, geometry where it is appropriate to use multiple decimal places for calculated quantities that are used in future calculations."
So do we round or not in financial calculator when taking fv to pv for another calculation?

Hey I kind of get what vcaa is saying. For eg if u had a payment of -43.26738 then ur fv would be 0. But to find the extra payment that u need to pay, u need to make ur Payment -43.27 to find the amt of money left. Bc it'll be a tiny number the decimal places make a huge difference.