Range
The simplest measure of spread, calculated as the difference between the maximum and minimum values: Range = Max - Min.
Real World
During the UK's record heatwave in July 2022, the temperature range in London was from about 18 °C overnight to 40.3 °C — a range of over 22 °C — highlighting the extreme variability that day.
Exam Focus
Always note that the range is affected by outliers; pair it with the IQR or standard deviation for a more reliable comparison.
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