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March 19, 2024, 03:02:47 pm

Author Topic: VCE General & Further Maths Question Thread!  (Read 748682 times)  Share 

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AngelWings

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Re: VCE Further Maths Question Thread!
« Reply #2085 on: March 21, 2018, 08:27:10 pm »
+1
HELP HELP HELP!!!!

If we have the z score (-1.4) , the mean (0.471) and the standard deviation (0.128), how does this justify that the data is a normal distribution?? PLS HELP :)
If my stats skills don't serve me wrong, in order to get these statistics, mostly z score and often st. dev.., this is an assumption we make of the data set.
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Homer

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Re: VCE Further Maths Question Thread!
« Reply #2086 on: April 11, 2018, 04:48:43 pm »
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How would you do C?  :o
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PhoenixxFire

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Re: VCE Further Maths Question Thread!
« Reply #2087 on: April 21, 2018, 08:01:07 am »
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When we are drawing a graph (e.g a bar chart) Do we need to draw horizontal lines across? Like if our Y axis counts in 2’s do we need to do a dotted line for the numbers that aren’t listed or is that just something they do in textbooks to help us read it?
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jazzycab

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Re: VCE Further Maths Question Thread!
« Reply #2088 on: April 21, 2018, 02:27:43 pm »
+1
When we are drawing a graph (e.g a bar chart) Do we need to draw horizontal lines across? Like if our Y axis counts in 2’s do we need to do a dotted line for the numbers that aren’t listed or is that just something they do in textbooks to help us read it?
In any VCE maths exam, you only need to draw on a graph whatever the question instructs you to draw, so, no, these lines are not necessary

PopcornTime

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Re: VCE Further Maths Question Thread!
« Reply #2089 on: April 25, 2018, 11:11:35 pm »
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Just need help with b i) and ii)

MAGGOT

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Re: VCE Further Maths Question Thread!
« Reply #2090 on: April 25, 2018, 11:42:41 pm »
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Just need help with b i) and ii)

7bi)
Rate * Previous balance of loan = Interest paid
Where interest paid = $100
           previous balance of loan = $4000
           rate = x
*Note you can use any numbers from the table as long as you use the interest paid of that row and the balance of loan from the row above of it
x * 4000 = 100
x = 0.025 * 100 = 2.5%
Therefore the quarterly interest rate is 2.5%
7bii)
The annual interest rate is x4 the amount of the quarterly interest rate
Rate = 2.5% * 4
         = 10.0%

PopcornTime

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Re: VCE Further Maths Question Thread!
« Reply #2091 on: May 05, 2018, 10:32:49 pm »
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need help with Q4, Q7 in 2013 further exam 1 -- business.



jazzycab

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Re: VCE Further Maths Question Thread!
« Reply #2092 on: May 06, 2018, 11:29:51 am »
+2
need help with Q4, Q7 in 2013 further exam 1 -- business.

For Question 4:
The total amount paid is the amount of each payment multiplied by the number of payments, plus the deposit: \(A=36\times400+3000=17400\).
The total amount of interest paid is the amount in excess of the purchase price: \(I=A-PP=17400-15500=2400\).
The interest rate can be then calculated using the simple interest equation (note that 36 months = 3 years and that interest can only be paid on the loan amount which is the amount remaining after the deposit has been paid \(P=15000-3000=12000\)):

So the answer is D.

For Question 7:
The graph is linear, which indicates simple interest. At 0 years, the investment value is $1000 (i.e. the principal investment amount). After 1 year, the investment amount is $1050. Thus, \(1050-1000=50\) is the amount of interest earned in 1 year. From this information, we can find the interest rate:

The second investment has $600 of interest earned in 8 years, at the same interest rate (5% p.a. simple interest):

So the answer is C.

michaeljacksonftw

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Re: VCE Further Maths Question Thread!
« Reply #2093 on: May 20, 2018, 07:28:58 pm »
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How do you work out the quarterly interest rate from an amortization table? (#financial maths sucks)

PopcornTime

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Re: VCE Further Maths Question Thread!
« Reply #2094 on: May 20, 2018, 11:49:39 pm »
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How do you work out the quarterly interest rate from an amortization table? (#financial maths sucks)


Interest paid/ Previous Balancex100 for what ever compounding interest rate.

For annual, do interest/previous balance x 100 x compounding periods (for example 4 for quarters)

michaeljacksonftw

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Re: VCE Further Maths Question Thread!
« Reply #2095 on: May 21, 2018, 01:40:05 pm »
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Our school split the core data analysis sac into 2 parts. In part A I got 38/40 but I stuffed up part B getting 32/40. So my overall score is 35/40. Can I still get a study score of 45 raw in further? A few people got 100% in both part A and part B, but we aren't told our rankings. Most of my marks I lost are careless. I'm in a strong cohort, last year there were about 40 40+ scores and a few 50s.
« Last Edit: May 21, 2018, 01:42:11 pm by michaeljacksonftw »

CainBFG

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Re: VCE Further Maths Question Thread!
« Reply #2096 on: May 24, 2018, 07:20:15 pm »
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PLEASE someone help with Financial Maths!!!! Notes or worksheets, ANYTHING!!!

galaxy21

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Re: VCE Further Maths Question Thread!
« Reply #2097 on: May 31, 2018, 04:52:18 pm »
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Hi!
Can someone please explain what they are saying in the study design when they say
"cause and effect; the difference between observation and experimentation when collecting data and the need for experimentation to definitively determine cause and effect" and "non-causal explanations for an observed association including common response, confounding, and coincidence;discussion  and  communication  of  these  explanations  in  a  particular  situation  in  a  systematic  and  concise  manner." ?
I am not sure whether our teachers have explained this differently or whether we have missed learning it. Please explain?  :-\
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PhoenixxFire

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Re: VCE Further Maths Question Thread!
« Reply #2098 on: May 31, 2018, 05:02:24 pm »
+1
Hi!
Can someone please explain what they are saying in the study design when they say
"cause and effect; the difference between observation and experimentation when collecting data and the need for experimentation to definitively determine cause and effect" and "non-causal explanations for an observed association including common response, confounding, and coincidence;discussion  and  communication  of  these  explanations  in  a  particular  situation  in  a  systematic  and  concise  manner." ?
I am not sure whether our teachers have explained this differently or whether we have missed learning it. Please explain?  :-\
This is basically just the whole 'correlation does not equal causation' thing. It's saying that just because something appears to be related does not mean that one thing causes the other. Experimentation allows other variables to be controlled whereas if only observation is used to determine the relationship there could be many, many other factors influencing it. (15 weird things that appear to be related)

The non-casual explanations are basically just explanations other than them being related.
Common response: Both of the variables measured are due to a 3rd unmeasured variable
Confounding: There are other uncontrolled variables affecting the results
Coincidence: They just happen to appear related.

The communication thing is just being able to say whether they are related and what other possible explanations for the apparent relationship could be (i.e. the things listed above).
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galaxy21

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Re: VCE Further Maths Question Thread!
« Reply #2099 on: May 31, 2018, 05:07:58 pm »
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This is basically just the whole 'correlation does not equal causation' thing. It's saying that just because something appears to be related does not mean that one thing causes the other. Experimentation allows other variables to be controlled whereas if only observation is used to determine the relationship there could be many, many other factors influencing it. (15 weird things that appear to be related)

The non-casual explanations are basically just explanations other than them being related.
Common response: Both of the variables measured are due to a 3rd unmeasured variable
Confounding: There are other uncontrolled variables affecting the results
Coincidence: They just happen to appear related.

The communication thing is just being able to say whether they are related and what other possible explanations for the apparent relationship could be (i.e. the things listed above).

Awesome thanks so much!!! ;)
2018 - Biology, Further
2019 - English, Chemistry, Methods, Health and Human Development
2020 - Bachelor of Science (Melbourne Uni)