Mathematics for IGCSE & O level - Statistical Diagrams (Section 4 - No. 28)
What is a 'class interval' in the context of a histogram?
The total number of observations.
The range of values grouped together in a histogram.
The height of each bar in a histogram.
The frequency of a specific data value.
Explanation
A class interval is a range of values that are grouped together for display on the x-axis of a histogram.
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