# November 2008 AQA maths mark scheme

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Version : 1.0: 11.08
abc
General Certificate of Secondary Education
Mathematics 4307
Specification B
Module 1 Tier H 43051H
Mark Scheme
2008 examination - November series

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Mark schemes are prepared by the Principal Examiner and considered, together with the
relevant questions, by a panel of subject teachers. This mark scheme includes any
amendments made at the standardisation meeting attended by all examiners and is the scheme
which was used by them in this examination. The standardisation meeting ensures that the
mark scheme covers the candidates' responses to questions and that every examiner
understands and applies it in the same correct way.…read more

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2008 November series
The following abbreviations are used on the mark scheme:
M Method marks awarded for a correct method.
A Accuracy marks awarded when following on from a correct method.
It is not necessary always to see the method. This can be implied.
B Marks awarded independent of method.
M dep A method mark which is dependent on a previous method mark being
awarded.

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2008 November series
MODULE 1 HIGHER TIER 43051H
Note: Probability - Accept fraction, decimal or percentage. Do not accept ratio.
1 fx at least two correct products eg (0 +) ...48 + 98+... 305 M1
M1
with intention to sum 280
160
Their total ÷ 160 M1 dep Not unless 1.75 seen
280
Accept 1.8 from correct working
seen (not 2)
Ignore subsequent working
1.75 A1

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2008 November series
3(a) 30, 43, 60 B1
1 Must be an increasing function and
3(b) 4 or 5 plots at ucb's ( ± sq) B1
2 not a straight line (ignore <4)
4 or 5 of their heights correct Must be an increasing function and
B1 ft
within the classes not a straight line
Smooth curve or polygon and Must be an increasing function and
B1
fully correct not a straight line

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2008 November series
6 Suitable Key (< 100) B1 eg 2 6 represents 26 mm
Ignore extreme values (stem vice
Stem correct 4, 5, 6, 7, 8, 9 B1
versa)
4 3
5 8
6 2
B1 Ordered leaves
7 0 9
8 2 6 9 9
9 5 7 7
7(a) 1 ­ (0.4 + 0.25 + 0.05) M1 or 0.3
1
× 0.3 M1 dep oe
2
0.15, 0.15 in table only 3

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Mathematics B, 43051H - AQA GCSE Mark Scheme 2008 November series
260
Any correct method seen or implied
9 × 2000 M1 260000
(260 + 170 + 70) Not × 2000
500
A1 one or two correct
NUT 1040
Ignore subsequent working
ATL 680 A2