Support · Mathematics Standard 11–12 – Year 11 · Data analysis
Support Explain the impact of outliers on the measures of centre and spread
Resources for the prerequisite content of this dot point: earlier-stage (or earlier sub-level) dot points in the same strand that students usually need first. Use these to fill gaps before or alongside the core lesson.
Prerequisite links are draft mappings generated from the syllabus structure (earlier stage, same strand, closest content). They are being reviewed by teachers. Spot a poor match? Tell us.
Prerequisite dot points
Identify and explain the impact of outliers on the measures of centre and range
Stage 4 · Data analysis Draft mapping
- Interactive toolStarterMaths Is Fun: OutliersUse it for: Shows how an outlier changes mean and median.
- PhET Center and VariabilityUse it for: Kick a soccer ball to build datasets; see how outliers shift mean, median, range and IQR.
Identify standard deviation as a measure of spread
Stage 5 · Data analysis A Draft mapping
- Interactive toolStarterMaths Is Fun: Standard deviationUse it for: Plain-English explanation of standard deviation with worked examples and questions.
Identify the range as a measure of spread to describe variation in a dataset
Stage 4 · Data analysis Draft mapping
- PhET Center and VariabilityUse it for: Kick a soccer ball to build datasets; see how outliers shift mean, median, range and IQR.
- Corbettmaths practice questions: Averages: medianUse it for: Free printable graded practice questions (with answers) on averages: median for drill or a quick check.
- WorksheetDrillKuta free worksheet: Center and spread of dataUse it for: Printable skills-practice sheet with answer key on center and spread of data; good for drill or homework.
- WorksheetDrillKuta free worksheet: Centre and spreadUse it for: Printable skills-practice sheet with answer key on centre and spread; good for drill or homework.
- VideoStarterCorbettmaths video: Averages: rangeUse it for: Short worked-example video on averages: range to model the method before practice or for flipped revision.