The big idea
📈
Charts persuade through geometry
Pictures bypass the scrutiny sentences receive. Read the axes first.
Statistics for Everyday Life · Lesson 3
Visualising Data
beginner⏱ 17 min · 7 cards
Try it
Match the Chart
“Department headcounts drawn as a line chart.”
Does this chart type fit what is being shown?
Decide which chart types represent the data honestly.
Four types
What each is for
Tap each.
Key term
The hidden choice
How can a histogram hide two peaks?
tap to reveal ↻
Bin width
Widen the bins and a bimodal distribution flattens into one hump — without altering a single data point.
One dataset, three stories
Recycling rose 31% to 38%
Ten years on a 0–100 axis: a modest climb. Ten years on a 30–40 axis: a dramatic ascent.
The last three years alone, where it dipped: a decline. No number changed in any of them.
Quick check
What makes statistics necessary?
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