discussed. Conclusions should be formed and expressed within a sound structured answer so that the whole is well presented. New illustrations and apposite examples should be introduced as further evidence of an ability to recognise the principles of the question and their application to relevant current situations. 23–25 for an answer which, given the time constraint, could not be improved significantly: it will have clear analysis, ample illustration and a good attempt at considered evaluation. Be positive in your marking awarding marks for what is there without being too much influenced by omissions. Marks should not be deleted for inaccuracies. Corresponding marks for sub-sections. Level 1 2 3 4 Total Mark 1–4 5–6 7–8 9–12 Total Mark 1–4+ 5–6+ 7–8+ 9–13
Page 5 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2016 9708 42 © Cambridge International Examinations 2016 2 The answer should consider the initial proposition and comment on its validity. It should then identify and describe the necessary conditions for efficient resource allocation and consider whether it can be achieved by the market alone.  L4 (18–25) For a reasoned and clear discussion with accurate development of theory and good explicit links to the statement together with reasoned evaluative comments and conclusions. Max 20 if no conclusion. L3 (14–17) For a competent comment together with limited elaboration of the analysis or imprecise links to the statement. There will be some discussion but the evaluation will not be fully developed or extensive. L2 (10–13) For a brief explanation but weak or ill-explained links to the statement. The explanation will be undeveloped with some limited analysis. L1 (1–9) For an answer which shows some knowledge but does not indicate that the question has been fully grasped. The answer will have some correct facts but include irrelevancies. Errors of theory or omissions of analysis will be substantial.
Page 6 Mark Scheme Syllabus Paper Cambridge International AS/A Level – May/June 2016 9708 42 © Cambridge International Examinations 2016 3 (a) Explanation of consumer equilibrium, using indifference curves and budget lines, as point of maximum satisfaction with given income and given prices. Derivation of a point on the demand curve from the equilibrium point. The rest of the demand curve is only obtained by a change in the equilibrium.  L4 (9–12) For a sound explanation of both budget lines and indifference curves and a clear link to the demand curve with accurate clear diagrams and a clear understanding of the principles involved. L3 (7–8) For an accurate reference to the question but with a more limited explanation, includes a link to the demand curve, or with minor errors in the analysis or in the diagrams.
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