VCE General & Further Maths Question Thread!

[epichedgehog]

Can someone tell me the answer for q9 of graphs and relations pwease.
this should probably be an exam discussion thread I'm guessing but oh well

I got C (point R)

[laurarm]

I got C (point R)

So did I

[sawoshi]

Hi, can anyone tell me how to solve question 3b. in the matrices module of the vcaa 2010 exam 2 paper?

[BakedDwarf]

Hi, can anyone tell me how to solve question 3b. in the matrices module of the vcaa 2010 exam 2 paper?

Find the inverse of the 3x3 matrix from part A. The bottom left value is x.

[Orson]

Anyone still got that 3-Median formula?

Anyways...Thanks everyone for all your help! I wish you all good luck, and I wish you all the best. I hope to meet you all one day, you're a great bunch of people!

-Orson

[keltingmeith]

Anyone still got that 3-Median formula?

Anyways...Thanks everyone for all your help! I wish you all good luck, and I wish you all the best. I hope to meet you all one day, you're a great bunch of people!

-Orson

On the off-chance nobody sees this before the exam (because, hey, it's 10 on the night before...), I do remember seeing these two:

c=(1/3)(yL+yM+yH)-m(xL+xM+xH)

c=(1/3)(y1+y2+y3)-b(x1+x2+x3)
b=(y3-y1)/(x3-x1)

Not sure if relevant because I never managed to learn Further's time series stuff... (fun fact: this is actually the reason I stay away from core, because cbf learning time series LOL)

[clarke54321]

I've just started the core for statistics. In regards to histograms, I'm unsure of what data I need to put into the set interval on the CAS. How do I know what my HStart and HStep should be?

Help would be muchly appreciated!

[Swagadaktal]

I've just started the core for statistics. In regards to histograms, I'm unsure of what data I need to put into the set interval on the CAS. How do I know what my HStart and HStep should be?

Help would be muchly appreciated!

yo fam you dont need to worry about that, all you need to do is cntrl + menu --> graph fit --> fit to data (i think, its been a long time so i might of mixed it up) and you're set) unless the question is very specific, but i doubt it would be

[clarke54321]

Could someone please help me with the following problem on seasonal indices:

To correct for seasonality, the actual number of bathing suits sold in Autumn should be:

The seasonal index of Autumn is 0.4

The answer is an increase of 250% but if we must take 250% of the actual figure to get the deseasonalised values isn't this an increase of 150%?

Thanks in advance

[Darth_Pepe]

Could someone please help me with the following problem on seasonal indices:

To correct for seasonality, the actual number of bathing suits sold in Autumn should be:

The seasonal index of Autumn is 0.4

The answer is an increase of 250% but if we must take 250% of the actual figure to get the deseasonalised values isn't this an increase of 150%?

Thanks in advance

I always do 100/seasonal index to show how much to increase or decrease.

So 100/0.4 = 250, which means we must increase by 250%

[clarke54321]

I always do 100/seasonal index to show how much to increase or decrease.

So 100/0.4 = 250, which means we must increase by 250%

But what happens to the original 100% which is already accounted for?

[Darth_Pepe]

But what happens to the original 100% which is already accounted for?

I dont understand your question. You are correcting for seasonality. If its 0.4, it must go up to 1. Thus 1/0.4 = 250% increase

[Peanut Butter]

But what happens to the original 100% which is already accounted for?

Where is this question from?

I think the answer should be an increase  of 150% or 250% of the original seasonal index.

[clarke54321]

Where is this question from?

I think the answer should be an increase  of 150% or 250% of the original seasonal index.

It is from chapter 6 review of Cambridge. I understand how it is an increase of 250% but if the 100% is already accounted for I can't see why it isn't an increase of 150%.

[Peanut Butter]

It is from chapter 6 review of Cambridge. I understand how it is an increase of 250% but if the 100% is already accounted for I can't see why it isn't an increase of 150%.

The answer is wrong.

As you suggested, the answer should be an increase of 150%