Exam 1 Networks Answers

[kjg]

two step dominance
you do it from the graph shown
you just make up a matrix for two step
you dont square it or anything

[Lyonzy]

please, debates are good! sorry, but that first matrix wasn't squared, i kinda took it two steps at a time.
The squared matrix is:
0 1 2 0 1
0 0 3 1 2
1 0 0 1 1
0 1 1 0 0
0 1 0 0 0
Maxleng, to square the matrix there's a pretty stupid process:

a b      a b
c d  ?  c d

The top left number is like ab+ad or something, i just use the calc.
It should have it in your textbook

[kjg]

all you do is the two step dominance
like so

0 1 2 0 1   | = 1+2+1=4
0 0 2 0 1   | = 2+1=3
1 0 0 1 1   | = 1+1+1=3
0 1 1 0 0   | =1+1=2
0 1 0 0 0   |=1


therefore, the answer is A

[maxleng]

ehh? do it manualy and go over all possible 2 step dominances, Team B has more (6) compared to Team A (4)


therefore Q8. B

[kjg]

thats what i did

do not always trust calculators
try going and doin it by hand now

it's A

[maxleng]

lol i just did i can only get 4 for Team A  :?:

AEC
ACB
ADC
ADE

Team B

BAE
BAC
BAD
BEC
BDC
BDE

[kjg]

lol i just did i can only get 4 for Team A  :?:

AEC
ACB
ADC
ADE

Team B

BAE
BAC
BAD
BEC
BDC
BDE

DAMMIT
hahahaha

yeah your right, great, awesome
26 out of 40 here i come

[maxleng]

lol...im still confused on Q6 though, i hope its a mistake by VCAA, or someone please point out how they did it!

[Lyonzy]

yeah i think the study design says that matrix knowledge was not required and therefore they couldn't put like eight step dominance on there, but i find it hard to look for two step dominance manually. anyways dont worry too much about it kjg, its only one mark.

btw, what did everybody get for the next question?

[kjg]

question 6, should be regarded as a stuff up as the dummy doesn't have a directed path

[Lyonzy]

yeah q6 i think could effectively be written with the two nodes connected to the dummy joined together, but the whole purpose of a dummy activity is lost if it doesn't have direction. So i think they'll do what they did last year with one i think in geo and give everybody the mark.

[kjg]

i hope so
boost me up a bit
plleeassseeee lol

[Lyonzy]

yeah lol if only they screwed up a few more questions!

[kjg]

yeah
dammit
all the hard work
and i screwed it all up in an instant

[Lyonzy]

yeah i hate it how that happens! it happened to me on like every practise exam that i did, i'd look over the answers only to see all of the ones i misread...