Mathematics for IGCSE & O level - Statistical Diagrams (Section 2 - No. 29)
If the class widths in a histogram are unequal, what must be considered when interpreting the diagram?
The frequency of each class
The frequency density of each class
The total number of data points
The median value
คำอธิบาย
When class widths are unequal, frequency density is used to account for the varying widths.