Data Skills

The collecting, recording, analysing and interpreting of data is a skill that is increasingly in demand in society.  Pupils will carry out data collection and analysis in a number of subjects.  The are expected to be able to do the following.

Year 7

  • collect own data for a survey, e.g. through designing a questionnaire
  • construct frequency tables for sets of data, grouped where appropriate, in equal class intervals (groups given to learners)
  • construct a wide range of graphs and diagrams to represent the data and reflect the importance of scale
  • interpret diagrams and graphs (including pie charts)
  • use mean, median, mode and range to compare two distributions (discrete data).

Year 8

  • plan how to collect data to test hypotheses
  • construct a wide range of graphs and diagrams to represent discrete and continuous data
  • construct frequency tables for sets of data in equal class intervals, selecting groups as appropriate
  • construct graphs to represent data including scatter diagrams to investigate correlation
  • interpret diagrams and graphs to compare sets of data
  • use mean, median, mode and range to compare two distributions (continuous data).

Year 9

  • test hypotheses, making decisions about how best to record and analyse the information from large data sets
  • construct and interpret graphs and diagrams (including pie charts) to represent discrete or continuous data, with the learner choosing an appropriate scale
  • select and justify statistics most appropriate to the problem considering extreme values (outliers)
  • examine results critically, select and justify choice of statistics recognising the limitations of any assumptions and their effect on the conclusions drawn
  • use appropriate mathematical instruments and methods to construct accurate drawings.

Extension

  • understand slopes and gradients of graphs and relate to compound measures.

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