Statistical Measures

Scheme of work: GCSE Higher: Year 9: Term 1: Statistical Measures

Prerequisite Knowledge

  • Interpret and present discrete and continuous data using appropriate graphical methods, including bar charts and time graphs.
  • Solve comparison, sum and difference problems using information presented in bar charts, pictograms, tables and other graphs.

Success Criteria

  • Interpret, analyse and compare the distributions of data sets from univariate empirical distributions through:
  • Appropriate graphical representation involving discrete, continuous and grouped data
  • Appropriate measures of central tendency (median, mean, mode and modal class) and spread
  • Construct and interpret stem and leaf diagrams
  • Apply statistics to describe a population

Key Concepts

  • A frequency table is used when the sample size increases beyond simple calculations being possible from a list.
  • The median average of a class width is used as the mid-pint when calculating the mean from grouped data.

Common Misconceptions

  • Students often find it difficult to calculate the median average from data presented in a frequency table.
  • When sorting continuous data into a grouped data table students often struggle to fully understand the inequality notation.

Statistical Measures Resources

Mr Mathematics Blog

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