Mathematics for IGCSE & O level - Statistical Diagrams (Section 5 - No. 17)
What is the relationship between the frequency and the area of a bar in a histogram when class widths are not equal?
Frequency equals area
Frequency is proportional to the area
Frequency is inversely proportional to the area
Frequency is unrelated to the area
Explication
When the class widths are not equal, the frequency of the bar is represented by area of the bar.