D1 Jan 2012 Edexcel Post-Exam Discussion - Solutions and paper in first post

Arsey

Fairly kind paper

Solve the route inspection, means you MUST start and end at the same point

(edited 12 years ago)

12 Jan D1 Model red.pdf948.1KB

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Reply 1

robert jones

Original post by Arsey

Fairly kind paper

Solve the route inspection, means you MUST start and end at the same point

hey arsey for q5) the bubble sort, your 7th pass is exactly the same as you 8th pass. is it necessary to show the 8th one? also what do you think of the grade boundaries? I'm thinking 67-68 for A.

(edited 12 years ago)

Reply 2

Arsey

yes, you will lose a mark if you do not have it

ALWAYS repeat the last pass, so you have two the same.

You might know it is in order, but you need to do a final pass, so that the algorithm does.

Reply 3

robert jones

Original post by Arsey

yes, you will lose a mark if you do not have it

ALWAYS repeat the last pass, so you have two the same.

You might know it is in order, but you need to do a final pass, so that the algorithm does.

i wrote further passes produce no swaps so stop, will this do? also, in the jan 11 ms for 2c) it hasnt shown and extra pass :s-smilie:

(edited 12 years ago)

Reply 4

Arsey

you should be fine with what you wrote, final (repeated) pass or a statement will do.

Reply 5

Arsey

[QUOTE=:)[excludedFace]biggrin[/excludedFace];35972193]has anyone got the answers?

:confused:

in the first post

Reply 6

Jhead1993

I think I drew ye graph wrong so I ended up with solution 70 as my coordinate, how many marks do you reckon I will drop for this? Will I get follow through marks when working out the maximum profit as I subbed In the coordinates I achieved

Thanks :confused:

Reply 7

bexlovescandy

Thank you so much! I thought I screwed this up (bad timing issue :s-smilie:

) but it's not as bad as I thought from what I remember. You're a legend for posting all of these, seriously :biggrin:

Reply 8

Arsey

Original post by Jhead1993

Reply 9

robert jones

Main reason for high grade boundaries= Arsey+Gibbo, giving great tips and increasing candidate performance!!! :smile:

Any ideas on grade boundaries?

Reply 10

Jukeboxing

Somehow I calculated the float for D as 8, how many marks will I lose from drawing the cascade chart with that mistake?

Reply 11

Arsey

Original post by robert jones

Main reason for high grade boundaries= Arsey+Gibbo, giving great tips and increasing candidate performance!!! :smile:

Any ideas on grade boundaries?

Gibbo81

i have just had an idea of how to improve our results

:ninja2:

Reply 12

Arsey

Original post by Jukeboxing

Somehow I calculated the float for D as 8, how many marks will I lose from drawing the cascade chart with that mistake?

2 marks, 1 in c and 1 in d

Reply 13

Mathematix

Got everything right except wrote 2 12's instead of 1 and a 13 when doing my bubble sort, so will I just lose one for accuracy? And how will this affect the first fit decreasing 3 marker with this list?

I calculated the lower bound fine at least.

Reply 14

.Username.

Arsey what do you reckon the grade boudaries are gonna be

Reply 15

Arsey

not sure, 60+ for an A.

definitions are normally terribly answered, as will the dummy questions.

I think the postie question will be a bloodbath too.

LP was pretty kind.

Reply 16

geditor

Original post by Arsey

you should be fine with what you wrote, final (repeated) pass or a statement will do.

Hi, is it necessary to give units of waste for the bin packing question? Thanks.

Original post by Arsey

not sure, 60+ for an A.

definitions are normally terribly answered, as will the dummy questions.

I think the postie question will be a bloodbath too.

LP was pretty kind.

61,62 or high sixties like 67,68