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This is how Aethel reads your books: each sentence lights up as it is read, the equation is spoken as maths, the table and the figure are described where they appear, and you can ask about anything you hear.
Thinking in Chances
A short guide to uncertainty
Chapter 3 · Reading a test result
| Test positive | Test negative | Total | |
|---|---|---|---|
| Has the condition | 9 | 1 | 10 |
| Does not | 89 | 901 | 990 |
| Total | 98 | 902 | 1,000 |
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