Daily Practice

Foundation

21st December 2024

5 questions · Foundation tier · 282 questions in this band

1
Choropleth Maps
A choropleth map uses class intervals of 0-10, 10-30, 30-40 and 40-90. Why might this be misleading?
2
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?
3
Correlation and Causation (Foundation)
What word describes a situation where one variable directly causes a change in another?
4
Risk (Foundation)
Express a risk of 1/20 as a percentage.
5
Skewness by Inspection
A data set has mean 12, median 12, mode 12. Describe its skew.

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