Daily Practice

Foundation

3rd May 2026

5 questions · Foundation tier · 282 questions in this band

1
Population Pyramids
A pyramid is roughly the same width all the way up, with only a slightly narrower top. What does this suggest?
2
Choropleth Maps
Two neighbouring regions on a choropleth map are shaded the same colour. What can you conclude about their values?
3
Data Cleaning and Outliers (Foundation)
The heights (cm) of 6 plants are: 15, 18, 16, 14, 17, 150. Find the mean of the remaining values after removing the outlier.
4
Correlation and Causation (Foundation)
Define correlation in your own words.
5
Risk (Foundation)
Out of 600 drivers who used a phone while driving, 24 had an accident that year, compared with 9 out of 900 drivers who did not use a phone. Calculate the risk of an accident for each group.

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