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November 01, 2024, 10:29:46 am

Author Topic: VCE General & Further Maths Question Thread!  (Read 808216 times)  Share 

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CA15

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Re: VCE Further Maths Question Thread!
« Reply #2430 on: February 06, 2019, 11:44:40 pm »
0
https://imgur.com/a/MU3vB2W

Hi,
I am having trouble with the correct method for this question.

I know how to calculate the time difference for it, which it is 32 minutes.

However from then my method of thinking is then subtracting 32 minutes from 6:03am and therefore getting the answer A however the correct answer is E.

My question is why do I have to add 32 minutes to 6:03am to get the answer E rather than subtracting 32 minutes?

MB_

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Re: VCE Further Maths Question Thread!
« Reply #2431 on: February 07, 2019, 04:01:33 pm »
+1
https://imgur.com/a/MU3vB2W
My question is why do I have to add 32 minutes to 6:03am to get the answer E rather than subtracting 32 minutes?
Mallacoota is east of Portland so the sun will rise in Mallacoota earlier than in Portland

Anyone know if I'm doing this right? Thanks
https://imgur.com/a/rlr8Aer
You've got the recurrence part right but for part b, you've set n=3/2 when it should be 18 as the interest is being compounded monthly, so each month interest is being received.

Hi! I've just started further maths this year, and I was wondering what does 'count' mean? For example, when I plot a histogram, I am asked to say what the 'count' is. Does it mean the values along the x axis that are part of a given interval?
Thanks so much!
I think you're right, it's just the number of items belonging to a given x
« Last Edit: February 08, 2019, 11:20:40 am by MB_ »
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BAH0003

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Re: VCE Further Maths Question Thread!
« Reply #2432 on: February 13, 2019, 10:10:07 pm »
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Hi,

I was having trouble with this question, was wondering if anyone can explain.

Question is:

A single back-to-back stem plot would be an appropriate graphical tool to investigate the association between a car's speed, in kilometres per hour, and the:

A) Driver's age, in years.
B) Car's colour (white, red, grey, other).
C) Car's fuel consumption, in kilometres per litre.
D) Average distance travelled, in kilometres.
E) Driver's sex (female, male)

Answer is E not sure how.

Thanks  :)

sweetiepi

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Re: VCE Further Maths Question Thread!
« Reply #2433 on: February 13, 2019, 10:27:41 pm »
+3
Hi,

I was having trouble with this question, was wondering if anyone can explain.

Question is:

A single back-to-back stem plot would be an appropriate graphical tool to investigate the association between a car's speed, in kilometres per hour, and the:

A) Driver's age, in years.
B) Car's colour (white, red, grey, other).
C) Car's fuel consumption, in kilometres per litre.
D) Average distance travelled, in kilometres.
E) Driver's sex (female, male)

Answer is E not sure how.

Thanks  :)
I haven't done stem plots in ages, however:
E is correct as it is the only option that has two categories (the options stated are male and female) that can be compared side to side (i.e. number of males that drive at 40km/h in comparison to females that drive at 40km/h etc).
From how I see it, the other options require multiple stem plots as there's more than two comparable categories in each answer.

Hopefully that helps a little! :)

(Disclaimer: I'm not the best at explaining this, so if someone more mathematically-minded would like to butt in, pls do <3)
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jollyboat

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Re: VCE Further Maths Question Thread!
« Reply #2434 on: February 19, 2019, 10:48:53 am »
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Hey, does anyone know for 5 number summaries whether you use outliers for minimum or maximum values, or whether you leave them out and use the highest/lowest non-outlier value?

Lear

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Re: VCE Further Maths Question Thread!
« Reply #2435 on: February 19, 2019, 11:20:04 am »
+2
You include them afaik
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KiNSKi01

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Re: VCE Further Maths Question Thread!
« Reply #2436 on: February 19, 2019, 06:53:49 pm »
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Yup always include them as min/max values  ;D
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lst1103

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Re: VCE Further Maths Question Thread!
« Reply #2437 on: February 20, 2019, 07:22:06 pm »
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Which KK point are people up to?

Hala119

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Re: VCE Further Maths Question Thread!
« Reply #2438 on: February 21, 2019, 07:19:43 pm »
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Hi!

Does anyone know where I can find practise SACs?

Thanks in advance!

AngelWings

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Re: VCE Further Maths Question Thread!
« Reply #2439 on: February 21, 2019, 07:28:21 pm »
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Hi!

Does anyone know where I can find practise SACs?

Thanks in advance!
We can't supply a school's or company's that you'd usually pay for due to copyright reasons. You can try writing your own questions, hope someone who wrote their own questions is willing to share or try questions from Checkpoints, ATAR Notes and previous VCAA questions though!
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dream chaser

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Re: VCE Further Maths Question Thread!
« Reply #2440 on: February 27, 2019, 09:03:17 pm »
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Hi Guys,

Need help with part (c) with this question. Not sure how to tackle it. Would really appreciate the help thanks. Also, for part (a), I got $272.06 and part (b) $24735.17. I think they are correct. Could someone notify me on that as well.

Thanks

jnylle

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Re: VCE Further Maths Question Thread!
« Reply #2441 on: March 14, 2019, 10:33:56 pm »
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how should i comment on the distribution of a boxplot in terms of its shape, centre and spread?
should i just list them out or would i have to write a few sentences???

- thank you in advanced! :)

lst1103

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Re: VCE Further Maths Question Thread!
« Reply #2442 on: March 16, 2019, 02:09:17 pm »
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When a questions asks for the spread of data, do we give the range or the IQR??

AngelWings

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Re: VCE Further Maths Question Thread!
« Reply #2443 on: March 16, 2019, 05:18:11 pm »
+2
Hi Guys,

Need help with part (c) with this question. Not sure how to tackle it. Would really appreciate the help thanks. Also, for part (a), I got $272.06 and part (b) $24735.17. I think they are correct. Could someone notify me on that as well.

Thanks
Bumping for you. Been a long time since I did financial maths (and it wasn't part of Core when I did Further). I'll let someone else help you to avoid inaccuracies. :)

how should i comment on the distribution of a boxplot in terms of its shape, centre and spread?
should i just list them out or would i have to write a few sentences???

- thank you in advanced! :)
According to my bound reference, sentences.

When a questions asks for the spread of data, do we give the range or the IQR??
The three valid stats you could provide as measures of spread are IQR, range and standard deviation. From memory, IQR is most reliable of the three, because the other two can be swayed quite easily by outliers. Not entirely sure here, but in the instance it's not specified, I'd be leaning towards putting all three if asked for numbers (depends on marks though) and, if commenting, probably just discuss the IQR.

As my information might be outdated or wrong, I'm happy to be corrected (and I apologise in advance if I am wrong). I'm using my own old notes from when I did Further *cough* 5 years ago *cough*.
« Last Edit: March 16, 2019, 05:20:12 pm by AngelWings »
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MB_

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Re: VCE Further Maths Question Thread!
« Reply #2444 on: March 24, 2019, 11:09:13 am »
+1
Hey everyone, was looking at my textbook trying to catch up because I have missed a lot of school but when an activity "crashes" does that mean that the time for that activity is now shorte.

So if activity G is 15 days long and crashes by 2 days. Does that mean the time now for activity G is 13.
I know its a simple question was just a bit confused as my teacher never explained crashing and just dove into the questions.

Thanks everyone!!
Crashing is just speeding up (or reducing) the completion time of a particular activity so your understanding is correct
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