Statistical Measures

March 12, 2023

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

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