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9. Statistics

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5 topics · 9 learning objectives

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  1. C9.1 Classifying statistical data

    1. C9.1.1

      • Classify and tabulate statistical data. e.g. tally tables, two-way tables.

  2. C9.2 Interpreting statistical data

    1. C9.2.1Read, interpret and draw inferences from tables and statistical

      • Read, interpret and draw inferences from tables and statistical diagrams.

    2. C9.2.2Compare sets of data using tables, graphs and statistical measures.

      • Compare sets of data using tables, graphs and statistical measures.

    3. C9.2.3Appreciate restrictions on drawing conclusions from given data

      • Appreciate restrictions on drawing conclusions from given data. e.g. compare averages and ranges between two data sets.

  3. C9.3 Averages and range

    1. C9.3.1

      • Calculate the mean, median, mode and range for individual data and distinguish between the purposes for which these are used. Data may be in a list or frequency table, but will not be grouped.

  4. C9.4 Statistical charts and diagrams

    1. C9.4.1

      • Draw and interpret: (a) bar charts (b) pie charts (c) pictograms (d) stem-and-leaf diagrams (e) simple frequency distributions. Includes composite (stacked) and dual (side-by- side) bar charts. Stem-and-leaf diagrams should have ordered data with a key.

  5. C9.5 Scatter diagrams

    1. C9.5.1Draw and interpret scatter diagrams.

      • Draw and interpret scatter diagrams.

    2. C9.5.2Understand what is meant by positive, negative and zero correlation.

      • Understand what is meant by positive, negative and zero correlation.

    3. C9.5.3Draw by eye, interpret and use a straight line of best fit

      • Draw by eye, interpret and use a straight line of best fit. Plotted points should be clearly marked, for example as small crosses (×). A line of best fit: • should be a single ruled line drawn by inspection • should extend across the full data set • does not need to coincide exactly with any of the points but there should be a roughly even distribution of points either side of the line over its entire length.