Mathematics for IGCSE & O level - Statistical Diagrams (Section 1 - No. 2)
What does the term 'class width' refer to in a histogram?
The height of the bar.
The range of values in each group.
The frequency of each group.
The frequency density of each group.
Giải thích
Class width refers to the range of values covered by each group (or interval) on the horizontal axis.