Mark scheme (Higher) : Paper 2 Calculator - June 2017

1 GCSE Mathematics Paper 2 Higher Tier Mark scheme 8300 june 2017 Version: Final Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at the standardisation events which all associates participate in and is the scheme which was used by them in this examination. The standardisation process ensures that the mark scheme covers the students responses to questions and that every associate understands and applies it in the same correct way. As preparation for standardisation each associate analyses a number of students scripts.

2 Alternative answers not already covered by the mark scheme are discussed and legislated for. If, after the standardisation process, associates encounter unusual answers which have not been raised they are required to refer these to the Lead Assessment Writer. It must be stressed that a mark scheme is a working document, in many cases further developed and expanded on the basis of students reactions to a particular Paper . Assumptions about future mark schemes on the basis of one year s document should be avoided; whilst the guiding principles of assessment remain constant, details will change, depending on the content of a particular examination Paper . Further copies of this mark scheme are available from Copyright 2017 AQA and its licensors.

3 All rights reserved. AQA retains the copyright on all its publications. However, registered schools/colleges for AQA are permitted to copy material from this booklet for their own internal use, with the following important exception: AQA cannot give permission to schools/colleges to photocopy any material that is acknowledged to a third party even for internal use within the centre. MARK scheme GCSE MATHEMATICS 8300/2H june 2017 3 Glossary for Mark Schemes GCSE examinations are marked in such a way as to award positive achievement wherever possible. Thus, for GCSE Mathematics papers, marks are awarded under various categories. If a student uses a method which is not explicitly covered by the mark scheme the same principles of marking should be applied.

4 Credit should be given to any valid methods. Examiners should seek advice from their senior examiner if in any doubt. M Method marks are awarded for a correct method which could lead to a correct answer. A Accuracy marks are awarded when following on from a correct method. It is not necessary to always see the method. This can be implied. B Marks awarded independent of method. ft Follow through marks. Marks awarded for correct working following a mistake in an earlier step. SC Special case. Marks awarded for a common misinterpretation which has some mathematical worth. M dep A method mark dependent on a previous method mark being awarded. B dep A mark that can only be awarded if a previous independent mark has been awarded.

5 Oe Or equivalent. Accept answers that are equivalent. eg accept as well as 21 [a, b] Accept values between a and b inclusive. [a, b) Accept values a value < b .. Accept answers which begin eg , , Use of brackets It is not necessary to see the bracketed work to award the marks. MARK scheme GCSE MATHEMATICS 8300/2H june 2017 4 Examiners should consistently apply the following principles Diagrams Diagrams that have working on them should be treated like normal responses. If a diagram has been written on but the correct response is within the answer space, the work within the answer space should be marked. Working on diagrams that contradicts work within the answer space is not to be considered as choice but as working, and is not, therefore, penalised.]

6 Responses which appear to come from incorrect methods Whenever there is doubt as to whether a student has used an incorrect method to obtain an answer, as a general principle, the benefit of doubt must be given to the student. In cases where there is no doubt that the answer has come from incorrect working then the student should be penalised. Questions which ask students to show working Instructions on marking will be given but usually marks are not awarded to students who show no working. Questions which do not ask students to show working As a general principle, a correct response is awarded full marks. Misread or miscopy Students often copy values from a question incorrectly.

7 If the examiner thinks that the student has made a genuine misread, then only the accuracy marks (A or B marks), up to a maximum of 2 marks are penalised. The method marks can still be awarded. Further work Once the correct answer has been seen, further working may be ignored unless it goes on to contradict the correct answer. Choice When a choice of answers and/or methods is given, mark each attempt. If both methods are valid then M marks can be awarded but any incorrect answer or method would result in marks being lost. Work not replaced Erased or crossed out work that is still legible should be marked. Work replaced Erased or crossed out work that has been replaced is not awarded marks.

8 Premature approximation Rounding off too early can lead to inaccuracy in the final answer. This should be penalised by 1 mark unless instructed otherwise. Continental notation Accept a comma used instead of a decimal point (for example, in measurements or currency), provided that it is clear to the examiner that the student intended it to be a decimal point. MARK scheme GCSE MATHEMATICS 8300/2H june 2017 5 Question Answer Mark Comments 1 B1 Additional Guidance 2 cm2 B1 Additional Guidance 3 (5, 7) B1 Additional Guidance 4 98 8n B1 Additional Guidance MARK scheme GCSE MATHEMATICS 8300/2H june 2017 6 Question Answer Mark Comments 5(a) 41 or or 25% B1 oe Additional Guidance Ratio eg 1 : 4 or 1 : 3 B0 41seen and answer 1.

9 4 B1 Expressed only in words eg 1 out of 4 B0 1 out of 4 and 41 B1 41seen with change to incorrect decimal or incorrect percentage eg 41 and answer B1 Ignore chance words if 41 seen eg 41 and answer Likely B1 5(b) (1 ) 10 ( ) 10 ( ) 5 or 21010 10 or 21000 M1 oe 500 A1 SC1 5 or 324 or 400 or 405 Additional Guidance 10 + 10 + 5 M0A0 SCs are for the answers from not including zero at least once ie 9 9 4 or 10 10 4 or 9 9 5 or from a misread ie 1 1 1 5 MARK scheme GCSE MATHEMATICS 8300/2H june 2017 7 Question Answer Mark Comments 6(a) x 2 1 0 1 2 3 y 4 0 2 2 0 4 B2 B1 1 or 2 values correct Additional Guidance 6(b) 5 or 6 points plotted correctly M1 Correct or ft their table in (a) Tolerance of 1 small square Points can be implied by graph passing through them Correct smooth parabolic curve and y-coordinate of minimum point in the range y A1 Tolerance of 1 small square for the six correct points from the table No further tolerance for the minimum Additional Guidance Tolerance of 1 small square means it is on the edges of or within the shaded area Ignore extra points plotted If their table in (a)

10 Has points that are beyond the grid these points will not be able to be plotted correctly Ignore any curve drawn for x < 2 or x > 3 Curve passing through all correct points within tolerance M1A1 Ruled straight lines A0 x MARK scheme GCSE MATHEMATICS 8300/2H june 2017 8 6(c) 12 or B1 Ignore any y-coordinate Additional Guidance ( , ) B0 Ignore their graph drawn in (b) there is no ft Condone , B1 7 sin 72 = 8x or 8 sin 72 or cos (90 72) = 8x or 8 cos (90 72) or 90 sin872 sin x or 890 sin72 sin x M1 oe eg 8 cos 72 or or and 2272) cos (88 [ , ] A1 Additional Guidance If trigonometry and Pythagoras are used it must be a fully correct method that would lead to the correct value of x Accept sin 72 8 M1 Accept opp or o for x eg sin 72 = opp8 M1 sin = 8x or sin = 8x (unless recovered) M0 Answer coming from scale drawing M0A0 Answer in range seen followed by 7 or 8 M1A1 Question Answer Mark Comments MARK scheme GCSE MATHEMATICS 8300/2H june 2017 9 istance travelled miles Question Answer Mark Comments 8(a) Joins (0, 0) to (30, 20)