Maths · KS3 Y9 · Statistics
Comparing two distributions
m179Free1:38Heddy Score 1 of 7, below the standardPlays from youtube-nocookie.com. No YouTube cookies until you press play.
What you need to know
- Compare an average and a measure of spread.
- Write each comparison in the context of the data.
- A smaller spread means the data are more consistent.
In this clip
25:50–28:52Quadratic inequalities and set notationgcse-math-a22c28:52–29:53Inverse functionsgcse-math-a7c29:53–32:24Composite functionsgcse-math-a7d32:24–43:19Trigonometric graphsgcse-math-a12d43:19–56:46Transforming graphsgcse-math-a1370:11–72:25Density and pressuregcse-math-r11b77:58–82:35Negative scale factorsgcse-math-g7c82:35–86:03Circle theorems: anglesgcse-math-g10a86:03–88:36Composite solids and frustumsgcse-math-g17d88:36–93:32The sine rulegcse-math-g22a93:32–98:09The cosine rulegcse-math-g22b98:09–99:29Box plotsgcse-math-s4cHeddy ScoreSeven checks every clip must pass before students see it: trusted, on the map, accurate, focused, accessible, safe, and proven by students.1/7, Below the standard
- Trusted source · passed. The creator's own upload, live and playable here.
- On the map · not judged yet. A teacher watched it: it mainly teaches this map topic.
- Spec-true · not judged yet. Accurate, and right for the current UK specification.
- Focused · failed. One idea, short enough to watch in one go.
- Accessible · not judged yet. Good captions, clear sound and pictures.
- Safe for children · not judged yet. Right for 11 to 16 year olds, with no sales pitch.
- Proven · not judged yet. Earned from our students: they learn from it, find it helpful and watch it to the end.
Our students
How the Heddy Score worksNot enough students yet
Our own students' answers. These are what move ★7 Proven.Why we picked it
Topic-by-topic revision built around the June 2023 Higher Paper 2; standard GCSE content for Year 11 Higher students.
The GCSE Maths Tutor on YouTubechecked 2026-10-16