Daily Practice

Foundation

2nd September 2026

5 questions · Foundation tier · 282 questions in this band

1
Time Series
A time series shows sales peaking every December for five years in a row. What is this repeating pattern called?
2
Population Pyramids
In a pyramid, the bars for ages 65+ are unusually long compared with younger age bands. Give one possible reason.
3
Choropleth Maps
A choropleth map uses class intervals of 0-10, 10-30, 30-40 and 40-90. Why might this be misleading?
4
Data Cleaning and Outliers (Foundation)
A data set of test scores out of 100 is: 55, 60, 58, 62, 59, -10. Which value must be an error, and why?
5
Correlation and Causation (Foundation)
What word describes a situation where one variable directly causes a change in another?

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