Maths · KS3 Y8 · Statistics

Choosing the right average

Choosing the right averageFree7:02Heddy Score 3 of 7, below the standard
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What you need to know

  • Put the data in order from smallest to largest before you start.
  • The mean is the total of all the values divided by how many values there are; use brackets or press equals before dividing on a calculator.
  • The mode is the value that appears most often, and a data set can have no mode.
  • The median is the middle value; when two values share the middle, add them and halve the total.
  • The range is the largest value minus the smallest value.

In this clip

Runs 7:02, from 0:00 to 7:02 of the full video.

Heddy Score3/7, Below the standard
See the seven stars
  • 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 · passed. One idea, short enough to watch in one go.
  • Accessible · passed. 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.
★ passed · ☆ pending · ✕ failed
Our students

Not enough students yet

Our own students' answers. These are what move ★7 Proven.
On YouTube

543K views · 5.73K likes · Kevinmathscience 1.13M subscribers

As reported by YouTube on 2026-11-02. Not part of the Heddy Score.
How the Heddy Score works

Why we picked it

A clear, step-by-step walk through calculating all three averages and the range, including the calculator trap with the mean.

Kevinmathscience on YouTubechecked 2026-10-22

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