Mathematics for IGCSE & O level - Statistical Diagrams (Section 5 - No. 40)
What is the purpose of using frequency density in a histogram?
To make all the bars equal in height.
To accurately represent frequency when class intervals have different widths.
To show the cumulative frequency.
To simplify the calculations.
Explication
Frequency density is used to correctly represent the frequency when the class intervals have different widths.