AS/A2 Stats 1 Stats 2

S3 EdExcel Project
Assessment
The project will be marked out of 25. Grades are not awarded from your exam board for the project but you should get a grade and/or mark from your teacher from A, B, C, D, E, N or ungraded. Grade A B C D E N U Mark range 22-25 19-21 16–18 13-15 10-12 7-9 0-6 A typical grade A A non-trivial problem which requires some originality of thought and allows the candidate to demonstrate a good range of statistical skills. Clearly defined aims, a realistic strategy which will produce the required results efficiently. The difficulties of data collection understood and an attempt (within practical limitations) made to overcome them. Relevant and adequate data collected. Appropriate, clear and accurate diagrams and calculations included. Aimless and repetitive diagrams and calculations not included. Reasons for choosing particular techniques and models discussed and prerequisites for tests understood. An intelligent interpretation of the data showing imagination but not making unjustified claims unsupported by the evidence. A good discussion of the limitations of the investigation. A clear and precise description of the light which the work has thrown on the problem. An accurate and clear statement of valid conclusions. NB: A project which compensates for very minor shortcomings in some areas by an excellent performance in others may be graded an A but to obtain 25 marks the project must be excellent in every respect. A typical grade C A problem which allows scope for the candidate to demonstrate a range of statistical skills, and a strategy that is reasonably clear, or a more ambitious project with an inadequate strategy. Some understanding of the difficulties of data collection and some attempts to overcome them. Suitable data collected. Some relevant and accurate diagrams and calculations but some minor inaccuracies and some irrelevant work carried out. Limited efforts made to justify choice of models. Interpretation of the data which shows some imagination or a good attempt at interpreting the data but making some assertions not justified by the evidence. Some discussion of the investigation. A barely adequate discussion of the light the data has thrown on the problem. Some valid conclusions drawn. Some suggestions for further lines of enquiry. A typical grade E A trivial problem with little scope for displaying statistical skills and a strategy that is muddled. Some data collected but little discussion of the problems of collecting relevant data and the care taken to avoid bias. Only a limited attempt at interpreting the data or an interpretation of the data whilst making several unjustified assertions. An attempt at pictorial representation and statistical calculations with some accurate work that is relevant to the specification. Some inaccuracies, repetitive calculations and diagrams; no clear thought as to the purpose of the work. An attempt to draw conclusions but the possible pitfalls not appreciated.

Summary if you want to ensure a good grade, check you are not doing grade E work! be clear, concise, accurate, non-trivial, realistic explain yourself don't repeat yourself © MathsNet 2001