Daily Practice

Foundation

5th August 2026

5 questions · Foundation tier · 282 questions in this band

1
Population Pyramids
On a pyramid where male bars point left and female bars point right, the bar for females aged 20-24 is longer than the bar for males aged 20-24. What does this tell you?
2
Choropleth Maps
On a choropleth map shaded from white (lowest) to black (highest), a region is coloured mid-grey. What does this suggest about its value?
3
Data Cleaning and Outliers (Foundation)
A shop records daily sales in pounds: 340, 355, 360, 348, 2, 352. Which value looks like a data entry error?
4
Correlation and Causation (Foundation)
A researcher finds that towns with more fire engines have more fire damage, and concludes that fire engines cause fire damage. Identify the flaw in this reasoning and suggest the true common cause.
5
Risk (Foundation)
Out of 200 people who ate a certain meal, 10 became ill. What is the risk of becoming ill, as a fraction in its simplest form?

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