Further Math Exam 1: Answers + Discussion!

[DylanM]

  I still don't see how postcode is categorical...
Ow well, what can you do?

[demand&supply]

I still don't see how postcode is categorical...
Ow well, what can you do?

This is because a data is numerical when you can measure it, postcode cannot be measured as they are numbers/codes allocated to categorize suburbs, hence it is a categorical data. Think about shoe size for example, same principle.

[DylanM]

This is because a data is numerical when you can measure it, postcode cannot be measured as they are numbers/codes allocated to categorize suburbs, hence it is a categorical data. Think about shoe size for example, same principle.

Alright thanks I get it now, still tricky question

[Dan1995]

Hey DAN, how did you get question 9 in bus maths as E shouldnt it be D

Sorry, I didn't do the business solutions, they were added by the moderators.

[Dan1995]

I have a question regarding Q9 of Core -

I did the equation and got -0.005, however, surely fuel consumption plotted against the weight of a car would be a positive slope?
E.g. wouldn't fuel consumption go up as the car for heavier and vice versa?
Thus, I gave D as the answer instead of B... what do you guys think?

It's because the consumption was worded in reverse to normal... Rather than being in the number of litres you use per kilometre, it was the number of kilometres traveled per litre of fuel. Therefore as the weight increases, the number of kilometres travelled per litre is reduced.

[Sanguinne]

can someone explain why q7 in graphs and relations is B. Some of the other options seem correct

[Lucho23]

can someone explain why q7 in graphs and relations is B. Some of the other options seem correct

So it's which one is actually, completely true.
A: All points in the feasible region (including boundaries if its greater/less than or equal to) are solutions, so, there are multiple points that are solutions.
B: Only points in the feasible region are valid solutions as they satisfy all constraints.
C: This is not true because you can have greater/less than inequalities with no 'equals to'. This is when you draw dotted lines.
D: This is not true as all points in the feasible region and the boundaries (as explained in A) are solutions, not only the corner points.
E: This is not true because firstly it fits in with the explanation for option D. Building on that, corner points with decimals are in theory solutions! It's only when your variables can be integers in real-life scenarios (eg. x = people) that the corner points with deicmal coordinates cannot be valid solutions.

Hope it makes more sense now

[Aayabdo]

Hi, im not sure that question 7 in networks is correct. All four graphs do not satisfy the equation of       v+f-e=2 which suggests that they are not planar therefore the answer is A

[Dan1995]

Hi, im not sure that question 7 in networks is correct. All four graphs do not satisfy the equation of       v+f-e=2 which suggests that they are not planar therefore the answer is A

You have to redraw them first. When they are redrawn with no intersecting edges, they are all planar and all satisfy Euler's formula. The answer is E

[abcdefg9999]

In number patterns module, for question 9, does anyone get D as the answer like me? 

[AngelWings]

In number patterns module, for question 9, does anyone get D as the answer like me? 

I believe it says 9. D in the suggested answers on the OP?

[lokzo]

Anyone know if there is any correlation between what's tested on exam 1 and what's tested on exam 2?

Ie. Is it likely for them to assess different parts of the course in exam 2 compared to exam 1, or roughly the same topics as exam 1?

[Dan1995]

Anyone know if there is any correlation between what's tested on exam 1 and what's tested on exam 2?

Ie. Is it likely for them to assess different parts of the course in exam 2 compared to exam 1, or roughly the same topics as exam 1?

Usually any common areas that aren't examined in exam 1 will be covered in exam 2. For example, there wasn't much about least squares regression on exam 1, so I would expect there to be questions on that in exam 2, with a three median regression being less likely as it was on exam 1.

[lokzo]

Usually any common areas that aren't examined in exam 1 will be covered in exam 2. For example, there wasn't much about least squares regression on exam 1, so I would expect there to be questions on that in exam 2, with a three median regression being less likely as it was on exam 1.

So has anyone gone through and picked out anything major that wasn;t assessed on exam 1, that should be on exam 2?

[Zues]

Anyone aware of how many marks you can drop across both exams and still get 45 or above?

ive dropped 3 on exam 1, but 2 of them was mis reading the question. If i get 60/60 on exam 2 what will i be looking at, if anyones aware?
Im on 98/100 on sacs near the top rank and in a extremely strong cohort