Post by: Joseph41 on October 22, 2019, 01:48:27 pm
(https://i.imgur.com/qMdnUvY.png)
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Post by: Joseph41 on November 04, 2019, 11:13:45 am
Post by: Sai Ramishetty on November 04, 2019, 11:15:01 am
How was Exam 2? Sounds like it was hard to finish?!It was not bad, but obviously exam 1 was a lot easier. What did u guys get for the last question in the geometry and measurement section?
Post by: Jim_Bob on November 04, 2019, 11:18:35 am
I can't believe i stuffed the last question up for matrices!!! Literally spent 30 mins on it and yet i still couldnt get it.
Do you think I'll be able to get consequential
Post by: ImamB1 on November 04, 2019, 11:26:10 am
Post by: TheEagle on November 04, 2019, 11:28:39 am
Also what'd you guys get for the finance question for the total interest (the reducing balance loan of 50000, fortnightly
Post by: Jim_Bob on November 04, 2019, 11:30:27 am
Post by: ImamB1 on November 04, 2019, 11:32:02 am
What did you guys get for core when it asked for the number of ays the maximum temp was less than the median of the min? I got 1I got 1 as well but for the interest it was actually 47000 something don’t remember exactly
Also what'd you guys get for the finance question for the total interest (the reducing balance loan of 50000, fortnightly
Post by: rani_b on November 04, 2019, 11:33:23 am
3m,,,
I can't believe i stuffed the last question up for matrices!!! Literally spent 30 mins on it and yet i still couldnt get it.
Do you think I'll be able to get consequential
What did you get?? I think i stuffed it up too :( spent 20 mins on it
Post by: phurley375 on November 04, 2019, 11:34:25 am
What did you guys get for core when it asked for the number of ays the maximum temp was less than the median of the min? I got 1
Also what'd you guys get for the finance question for the total interest (the reducing balance loan of 50000, fortnightly
I answered 1 due to the outlier. For the total interest, I answered around 45000 or something.
Post by: Jim_Bob on November 04, 2019, 11:35:00 am
Post by: SwirlyPOOF on November 04, 2019, 11:35:39 am
Post by: maths_genius246 on November 04, 2019, 11:37:24 am
Post by: rani_b on November 04, 2019, 11:37:45 am
I got [600 0 1400 0 ] from memory for the first, but apparently its wrong
Yeah I didn't get that :( and I don't think I got the right answer...
What did you guys get for the value of k for the last question in graphs and relations I got 30 🤷🏾♂️
I also got 30.
Post by: phurley375 on November 04, 2019, 11:37:54 am
Anyone recall what they got for last question of networks? I think I got around $12500 for the cost of crashing.
I got the same total. I just crashed activities on the critical path.
Post by: bom_infiz on November 04, 2019, 11:38:25 am
Post by: SwirlyPOOF on November 04, 2019, 11:41:13 am
I got the same total. I just crashed activities on the critical path.Cool, was thinking I mucked up after talking with mates :)
Post by: Arthurmorgan on November 04, 2019, 11:41:48 am
Post by: Nexica on November 04, 2019, 11:42:10 am
Was the time for the cargo 246 hours?That's what I got.
Post by: rani_b on November 04, 2019, 11:42:14 am
I need to know hahah :P
Post by: Tadd12345 on November 04, 2019, 11:45:00 am
Anyone recall what they got for last question of networks? I think I got around $12500 for the cost of crashing.Soz bro, the total cost was $12000 for minimum time to reduce. You probably crashed K twice, which is what a lot of people did
Post by: SwirlyPOOF on November 04, 2019, 11:47:03 am
Soz bro, the total cost was $12000 for minimum time to reduce. You probably crashed K twice, which is what a lot of people didYep you're right I crashed K twice. Damn. Well that's alright I already had a feeling I mucked up ;D
Post by: Tadd12345 on November 04, 2019, 11:47:46 am
I got the same total. I just crashed activities on the critical path.Nah, for one, there was a cheaper alternative to crash two activities which was cheaper than the cost of crashing K again.
Total cost of $12000.
The crashing of the two activities G and H cost $3500 and reduced the critical path by 1, while crashing activity K cost $4000
Post by: Nexica on November 04, 2019, 11:48:39 am
So does anyone know the answer to the last matrices question and is confident it's correct?part a:
I need to know hahah :P
part b:
is what I got for the last matrices question. I'm not sure if it's correct though.
Post by: maths_genius246 on November 04, 2019, 11:50:29 am
part a:DO u remember the activities u crashed and by how much?????
part b:
is what I got for the last matrices question. I'm not sure if it's correct though.
Post by: SwirlyPOOF on November 04, 2019, 11:50:34 am
part a:I recall getting the same answer so sounds about right ;)
part b:
is what I got for the last matrices question. I'm not sure if it's correct though.
Post by: Nexica on November 04, 2019, 11:52:07 am
DO u remember the activities u crashed and by how much?????Sorry, I didn't do networks. I did matrices/trig
Post by: rani_b on November 04, 2019, 11:56:39 am
part a:
part b:
is what I got for the last matrices question. I'm not sure if it's correct though.
Omg. i just realised what i did wrong.
Thank you for your answers!!
Post by: Kokurie on November 04, 2019, 11:56:52 am
Was the time for the cargo 246 hours?Yup same here :) Jeez I never even saw the 1 June and 11 June and just assumed it was a day apart ::) Until 2 mins before the end of the exam that is. Putting 10 days n 6 hrs in hours just made me question so hard.
part a:
part b:
is what I got for the last matrices question. I'm not sure if it's correct though.
Same, was confused since matrix B differs each time, wondering why they didn’t use different letters to denote it :o
Completely forgot the context but Got dis answer on my cas. Just hope I copied it correctly!
Post by: SwirlyPOOF on November 04, 2019, 11:59:23 am
Yup same here :) Jeez I never even saw the 1 June and 11 June and just assumed it was a day apart ::) Until 2 mins before the end of the exam that is. Putting 10 days n 6 hrs in hours just made me question so hard.Yeah that nearly baited me into getting the wrong answer as well. Luckily I noticed last minute :)
Same, was confused since matrix B differs each time, wondering why they didn’t use different letters to denote it :o
Completely forgot the context but Got dis answer on my cas. Just hope I copied it correctly!
Post by: ImamB1 on November 04, 2019, 12:07:58 pm
How did people get 30 for last graphs and relations answer where it wants the value of K, me and a few people got 100 for Kk can’t be 100 because it said how much more so I assumed that you do 100-70 to get 30 meaning k is 30 which you increase 70 by to get 100. Don’t take it from me though but I think that’s correct
Post by: Pabloscopy on November 04, 2019, 12:32:01 pm
Post by: arielzel1 on November 04, 2019, 12:33:25 pm
Also, was one of the answers for financial around $92? Think it was the question about the balance of the loan when it first goes beneath the monthly payment.
Post by: Pabloscopy on November 04, 2019, 12:34:53 pm
for part a of the final matrices question i wrote 'A' instead of 'AirWorld'. Do you think I will still get the mark?
Also, was one of the answers for financial around $92? Think it was the question about the balance of the loan when it first goes beneath the monthly payment.
I wrote both just in case, but I'm pretty sure they'll accept A
I got $92.15 I think
Post by: ImamB1 on November 04, 2019, 12:35:42 pm
for part a of the final matrices question i wrote 'A' instead of 'AirWorld'. Do you think I will still get the mark?I got $92.15 if i remember correctly
Also, was one of the answers for financial around $92? Think it was the question about the balance of the loan when it first goes beneath the monthly payment.
Post by: rani_b on November 04, 2019, 12:37:39 pm
I already lost 5 marks in exam 2, 1 mark in exam 1, and my sac average isnt that good. I think I'm have no chance of getting 40. Now I have to rely on Methods so so I can get a decent ATAR. I'm so frustrated right now, can't get myself to study for methods.
don't beat yourself up. Trust me I feel the exact same way, I'm so frustrated about silly marks, but there is nothing we can do now. Best thing is to relax for a couple of hours and then start studying when our mindset is good.
Post by: ImamB1 on November 04, 2019, 12:40:08 pm
Post by: Amnilauv on November 04, 2019, 12:42:31 pm
For graphs and relations i don't remember the question exactly but the one you had the step graph and drew the equation then it asked for the values when they have the same members, did you guys also get 9,17 and 25Yes, you just had to read off where both functions intersected
Post by: tomkel on November 04, 2019, 12:44:41 pm
Post by: mrymarshd on November 04, 2019, 12:44:45 pm
thanks!
Post by: ImamB1 on November 04, 2019, 12:50:27 pm
hey do you guys remember what you got for the maximum and minimum cost for graphs and relations?If i remember maximum i think it was $680 i think or close to that but the minimum I do remember was $610
thanks!
Post by: Pabloscopy on November 04, 2019, 12:50:57 pm
don't beat yourself up. Trust me I feel the exact same way, I'm so frustrated about silly marks, but there is nothing we can do now. Best thing is to relax for a couple of hours and then start studying when our mindset is good.
I really struggle trying not giving up on things, and times like this make it even harder. Might as well go to foundation studies after this.
Post by: ImamB1 on November 04, 2019, 12:51:50 pm
Post by: mrymarshd on November 04, 2019, 12:57:23 pm
If i remember maximum i think it was $680 i think or close to that but the minimum I do remember was $610
oh lol, because they asked for 60 members i thought we needed to add (4x5x70) + (4x10x100) --> $1540
and i did the same process for minimum, because they mentioned the number of people so... idk :-\
Post by: ImamB1 on November 04, 2019, 01:09:32 pm
Post by: pugs on November 04, 2019, 01:24:47 pm
Post by: PhoenixxFire on November 04, 2019, 01:25:01 pm
I already lost 5 marks in exam 2, 1 mark in exam 1, and my sac average isnt that good. I think I'm have no chance of getting 40. Now I have to rely on Methods so so I can get a decent ATAR. I'm so frustrated right now, can't get myself to study for methods.Definitely can still get a 40 with that! As long as your sac marks aren't below about 92% after scaling, all of your GA's will be A+ which will get you an A+. Can likely still get a 40 with SAC scores slightly lower than that because your exam 1 score is a high A+.
i lost 5 marks in exam 1, and got full marks in exam 2, does that mean i can get above a 40?Yep. Your exam 1 score is just below an A+ but your exam 2 score will compensate for that.
Post by: Amnilauv on November 04, 2019, 01:31:11 pm
for the residual question in core, did anyone also say that the assumption was that the relationship was non-linear, but it was wrong because the association is actually linear? (the r value ~0.966 is v high which means that it's linear - i didn't include this in the answer by the way but for reference)Question 1 asked what the assumption was, which was linear
However, judging by the residual plot, it clearly was not linear because you could see a distinct pattern, which is parabolic.
Question 2 stated that it did not support the assumption that it was linear because there was a clear pattern, hence, it was non-linear.
Post by: angelina.s on November 04, 2019, 01:32:27 pm
What did you guys get for core when it asked for the number of ays the maximum temp was less than the median of the min? I got 1
Also what'd you guys get for the finance question for the total interest (the reducing balance loan of 50000, fortnightly
i got one day too, also i got 45246.67 for the total interest question (i'm not sure if this is the same one as what your asking about bc that exam was a blur but i think it was the one that had a starting value of 350000)
Post by: pugs on November 04, 2019, 01:35:46 pm
Question 1 asked what the assumption was, which was linearbut the r value was very high and it was the same set of data so wouldn't it have to be a linear association? (i also thought that the residual plot didn't have a distinct pattern sigh)
However, judging by the residual plot, it clearly was not linear because you could see a distinct pattern, which is parabolic.
Question 2 stated that it did not support the assumption that it was linear because there was a clear pattern, hence, it was non-linear.
Post by: ImamB1 on November 04, 2019, 01:36:59 pm
Post by: Jim_Bob on November 04, 2019, 01:38:27 pm
When you had to calculate the residual for 3pm and 9am or something like that did you get 1(to the nearest whole number )?
With residuals, you want to find the predicted y value and actual y value. They gave us the x-value, so we could work out the predicted y-value. However, we needed to look at the scatterplot to find the ACTUAL value
Post by: Jashy on November 04, 2019, 01:41:42 pm
With residuals, you want to find the predicted y value and actual y value. They gave us the x-value, so we could work out the predicted y-value. However, we needed to look at the scatterplot to find the ACTUAL value
nope. I got approx 2.6 so therefore rounded to whole = 3.
Post by: Amnilauv on November 04, 2019, 01:43:13 pm
but the r value was very high and it was the same set of data so wouldn't it have to be a linear association? (i also thought that the residual plot didn't have a distinct pattern sigh)I'm not amazing at further, but I don't think r values have anything to do with residuals (or at least not much to do with it).
We were looking at the distribution of the dots on the graph, and we can see that the dots followed a parabolic shape.
Just a note that if there is a clear pattern of some sort, then the association will be non-linear , vise versa for no clear pattern.
From the get go, once you saw the residual graph, you would see that it is non-linear (because there was a pattern). The second question asked that it did not support the assumption of question 1 (which, I'm pretty sure any questions that ask 'what is the assumption?' will always be that it is linear), so you would know that it wouldn't be linear because it stated that it didn't support the assumption.
nope. I got approx 2.6 so therefore rounded to whole = 3.I got 105-102 = 3 for the residual
Post by: Jim_Bob on November 04, 2019, 01:44:18 pm
nope. I got approx 2.6 so therefore rounded to whole = 3.
I'm right though
Post by: Amnilauv on November 04, 2019, 01:45:35 pm
I'm right thoughYes, you had to use the equation to find the predicted value, and then for actual value you had to use the graph given (so the value of the actual value found on the graph was 105)
Post by: Jim_Bob on November 04, 2019, 01:48:06 pm
Yes, you had to use the equation to find the predicted value, and then for actual value you had to use the graph given (so the value of the actual value found on the graph was 105)
Ahaha yes! I was just a bit confused why you quoted my initial response with "nope." Scared me
Post by: Arthurmorgan on November 04, 2019, 01:49:00 pm
Post by: Jashy on November 04, 2019, 01:50:53 pm
The residual question answer:
yep agreed
Post by: Tadd12345 on November 04, 2019, 01:51:41 pm
When you had to calculate the residual for 3pm and 9am or something like that did you get 1(to the nearest whole number )?A lot of people got that but it was wrong. The answer is meant to be 1015-1012.4= 2.6 rounded to 3.
U misinterpreted the question, the value 1013 they gave u wasn’t the ACTUAL value, but instead a pressure point at 9am, which u then put in the regression line to calculate the predicted, and compare it with the actual value u find on the scatterplot, which was 1015
Post by: pugs on November 04, 2019, 01:52:18 pm
I'm not amazing at further, but I don't think r values have anything to do with residuals (or at least not much to do with it).o ok
We were looking at the distribution of the dots on the graph, and we can see that the dots followed a parabolic shape.
Just a note that if there is a clear pattern of some sort, then the association will be non-linear , vise versa for no clear pattern.
From the get go, once you saw the residual graph, you would see that it is non-linear (because there was a pattern). The second question asked that it did not support the assumption of question 1 (which, I'm pretty sure any questions that ask 'what is the assumption?' will always be that it is linear), so you would know that it wouldn't be linear because it stated that it didn't support the assumption.
I got 105-102 = 3 for the residual
what i was referring to was how i thought the relationship between the two variables is linear because the r value measures the strength and direction of a linear relationship between two variables and it was very high (0.966) so i figured that the residual plot had to relay the same information - stumped agh
Post by: Jashy on November 04, 2019, 01:54:15 pm
Did everyone get 40% ??
Post by: Sai Ramishetty on November 04, 2019, 01:57:12 pm
what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??Isn’t it 60%?
Did everyone get 40% ??
0.1(600) +0.2(600)= 180
180/300*100= 60%
Post by: arielzel1 on November 04, 2019, 01:57:50 pm
what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??
Did everyone get 40% ??
From memory I got 180/300= 60%
Post by: Nexica on November 04, 2019, 01:58:09 pm
what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??60%
Did everyone get 40% ??
Post by: Jim_Bob on November 04, 2019, 02:00:15 pm
60%
Indeed it is
Post by: maths_genius246 on November 04, 2019, 02:04:32 pm
Just wondering if getting a 40/40 on exam 1 and a 58/60 on exam 2 will result in a 45 ss raw???
Post by: Nexica on November 04, 2019, 02:06:20 pm
hey guysdepends on your ranking/cohort
Just wondering if getting a 40/40 on exam 1 and a 58/60 on exam 2 will result in a 45 ss raw???
if you're rank 1 that'd probably be ~48 or possibly 49
Post by: yourfriendlyneighbourhoodghost on November 04, 2019, 02:15:59 pm
What did you guys get for core when it asked for the number of ays the maximum temp was less than the median of the min? I got 1I got 1 too, also got somewhere in the 40000
Also what'd you guys get for the finance question for the total interest (the reducing balance loan of 50000, fortnightly
Post by: Jim_Bob on November 04, 2019, 02:19:17 pm
I personally think they'll be lower than last years as the questions asked were quite different. Different in that previous years' questions were worded more simpler and were essentially much easier
Post by: Pabloscopy on November 04, 2019, 02:20:42 pm
for the residual question in core, did anyone also say that the assumption was that the relationship was non-linear, but it was wrong because the association is actually linear? (the r value ~0.966 is v high which means that it's linear - i didn't include this in the answer by the way but for reference)
I wrote that it had a pattern, thus it was non-linear. I think that there was a parabolic pattern.
Post by: Pabloscopy on November 04, 2019, 02:21:58 pm
What do we think the A+ cutoff will be for both Exam 1 and Exam 2?
I personally think they'll be lower than last years as the questions asked were quite different. Different in that previous years' questions were worded more simpler and were essentially much easier
Hopefully. My only hope of gettinh 40 now is that the state in general didn't do as well as last year and that my cohort did well. But one can only hope in this circumstances
Post by: maths_genius246 on November 04, 2019, 02:24:05 pm
What do we think the A+ cutoff will be for both Exam 1 and Exam 2?For Exam 1 the A+ cut off will most likely be 37/40 as it was a fairly easy exam.
I personally think they'll be lower than last years as the questions asked were quite different. Different in that previous years' questions were worded more simpler and were essentially much easier
For Exam 2 however the A+ cut off will probably be 56/60 as it was fairly 'different' from past years.
Post by: peds01 on November 04, 2019, 02:37:16 pm
Also for the second last question, did you guys get 29 weeks for the overall minimum completion time with crashing?
Post by: peds01 on November 04, 2019, 02:38:11 pm
what did people write for the matrices question that asked about the % of people from A and F that moved to G in the next hour??
Did everyone get 40% ??
I think I got 40% but seems like I might've made a mistake from what others here are saying :-\
Post by: ImamB1 on November 04, 2019, 02:39:19 pm
Post by: DavidDenik on November 04, 2019, 02:41:22 pm
Post by: Jashy on November 04, 2019, 02:55:18 pm
Isn’t it 60%?
0.1(600) +0.2(600)= 180
180/300*100= 60%
From what i did, i got 40%
I did an exact same question (ofc with different values) in the trail exam, which i got right. I applied the same method and got 40%
Post by: ImamB1 on November 04, 2019, 03:07:28 pm
From what i did, i got 40%Many people got 60% including myself
I did an exact same question (ofc with different values) in the trail exam, which i got right. I applied the same method and got 40%
Post by: cats for the cup 2019 on November 04, 2019, 03:34:09 pm
As in, max of 71 barrels could fit into the shipping container.
Post by: yourfriendlyneighbourhoodghost on November 04, 2019, 03:42:17 pm
Post by: bom_infiz on November 04, 2019, 03:44:01 pm
For geometry and measurement - the one about barrels in the shipping container...did people get 71??
As in, max of 71 barrels could fit into the shipping container.
it should be 48 barrels because they all have to stand upright, I think 71 barrels is if you divide volume of container straight by the volume of barrel. the answer to my memory was you could place 8 in length, 3 in width and 2 in height. You can work this out by seeing how many of the barrel diameter can fit into the box in length, width and height. The answer should be 8x3x2 which is 48
Post by: Nexica on November 04, 2019, 03:59:04 pm
it should be 48 barrels because they all have to stand upright, I think 71 barrels is if you divide volume of container straight by the volume of barrel. the answer to my memory was you could place 8 in length, 3 in width and 2 in height. You can work this out by seeing how many of the barrel diameter can fit into the box in length, width and height. The answer should be 8x3x2 which is 48Also got 48 barrels.
Post by: dream chaser on November 04, 2019, 04:12:38 pm
For the question regarding the residual plot suggesting why there is not an association, would this get full marks
'The residual plot showing a clear pattern rejects assumptions that there is an association between atmospheric pressure at 9am and atmospheric pressure at 3pm'. Was I meant to say linear association?
Also what study score am I looking at with the following grades:
GA1: 95%
GA2: 39/40
GA3: 56/60
Not sure what my rank is but pretty sure I am close to the top in a competitive cohort
Post by: SwirlyPOOF on November 04, 2019, 04:14:05 pm
Post by: JeromeTT on November 04, 2019, 05:07:17 pm
Got a couple of questions.
For the question regarding the residual plot suggesting why there is not an association, would this get full marks
'The residual plot showing a clear pattern rejects assumptions that there is an association between atmospheric pressure at 9am and atmospheric pressure at 3pm'. Was I meant to say linear association?
Also what study score am I looking at with the following grades:
GA1: 95%
GA2: 39/40
GA3: 56/60
Not sure what my rank is but pretty sure I am close to the top in a competitive cohort
43-45
Post by: JeromeTT on November 04, 2019, 05:08:41 pm
SAC Average is at around 92%. Ranked 5 in a really strong cohort. Exam 1 got 37/40 and Exam 2 got 55/60. Am I able to still get 40+?Yep definitely possible
39-42
Post by: dream chaser on November 04, 2019, 05:47:23 pm
Post by: arielzel1 on November 04, 2019, 06:14:21 pm
Exam 1: 40/40
Exam 2: 58/60
Ranked either 1 or 2 in a pretty strong cohort (the SACs were difficult.)
What study score would I be looking at? Cheers
Post by: isabelekelmans on November 04, 2019, 06:24:58 pm
Got 39/40 on exam 1 and 59/60 on exam 2. What study score am I probs gonna get? thanks :))))
Post by: nikki730 on November 04, 2019, 06:37:50 pm
And what would it be if I got 57/60??
Post by: Springyboy on November 04, 2019, 06:43:18 pm
If I have a SAC score of 98% and am Rank 1 in my cohort (which is a VERY strong cohort), and got 40/40 in Exam 1 and 58/60 in Exam 2, what study score would I get?
And what would it be if I got 57/60??
48-49 probably
My sac average is 97%
Got 39/40 on exam 1 and 59/60 on exam 2. What study score am I probs gonna get? thanks :))))
I'd say 48 but depends on your cohort ranking
Post by: ngch1099 on November 04, 2019, 09:17:13 pm
Post by: ImamB1 on November 04, 2019, 10:03:03 pm
Post by: DESOLAT3 on November 04, 2019, 10:39:39 pm
SAC marks: 89
Exam 1: 34/40
Exam 2: 58/60
Post by: liamd.mcpherson on November 05, 2019, 06:23:36 am
Pretty sure I got 246 hours because it took 10 days and 6 hours, let me know if I’m wrong 😬
Post by: fish58 on November 05, 2019, 10:08:14 am
Post by: Jashy on November 05, 2019, 10:18:05 am
Roughly what score am I looking to get? Over 40?
SAC marks: 89
Exam 1: 34/40
Exam 2: 58/60
41-43 i would assume, as i had a friend in a similar situation as yourself and got 41 raw score in a moderate cohort