Data and Decisions · Statistics

Averages and Spread

Using mean, median, mode, and range to summarize complex datasets.

Key Questions

  1. 1Which measure of average is most affected by a single extreme outlier?
  2. 2Why is the range a measure of consistency rather than a measure of average?
  3. 3When would the mode be a more useful average than the mean?

National Curriculum Attainment Targets

KS3: Mathematics - Statistics
Year: Year 7
Subject: Mathematics
Unit: Data and Decisions
Period: Statistics

Suggested Methodologies

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