Mean, median and spread

Summarising data with a couple of numbers: mean, median, mode, range and standard deviation, with salaries from an invented neighbourhood, when the mean misleads, box plots and an activity with the class's heights.

Use this templateSee all templates
  • 11 slides
  • Free, nothing to install
  • Downloads as PowerPoint
Cover of the presentation “Mean, median and spread”

What’s inside

  1. One number to sum them all up
  2. Measures of the center
  3. When the mean misleads
  4. Calculating the median
  5. How far apart the data are
  6. Same mean, different story
  7. Boxes and whiskers
  8. Heights in a class (invented)
  9. Measure your class

How to use it

  1. Click Use this template: it opens in Revela, in your browser. Nothing to install.
  2. Replace the text, images and data with your own. The speaker notes tell you what to say on each slide.
  3. Present it with your phone as a remote, share it with a link or download it as PowerPoint.

More in Data

What we throw away in Villa CardoBins that bounce with sound, giant figure, waterfall, stacked bars, colour-coded pie, funnel, matching and tableData maps: reading a choroplethReading and making maps that colour areas according to a value: what a choropleth map is, colour scales, rates versus totals, the danger of area size and an invented example of unemployment by countyMarathon: what the finishes tell usRace-bib cover, figures with sound, finish-time histogram, the wall at km 30, a running 3D robot pacer, table with formulas and medalWeb and marketing metricsKPIs with sparklines, four-series lines, areas, conversion funnel, combo chart and table with formulasResults dashboardDashboard style: gradient KPIs, waterfall, funnel, treemap and bubble charts, a table with automatic totalsDashboard for a caféA weekly dashboard for an invented café: sales by day, average ticket, star products, peak hours and staff, with clear indicators and the decision that comes out of each chart