This question was previously asked in

NDA (Held On: 18 Apr 2021) Maths Previous Year paper

Option 2 : the area of the rectangle.

Electric charges and coulomb's law (Basic)

42773

10 Questions
10 Marks
10 Mins

__Concept:__

- When constructing a
**histogram**with**non-uniform (unequal) class widths**, we must ensure that the**areas of the rectangles are proportional to the class frequencies**. - Remember that the
**histogram**differs from a**bar chart**in that it is the**area**of the bar that denotes the value,**not the height**. This means that we would need to consider the widths in order to determine the height of each rectangle.

__Calculation:__

From the definition of histogram, it is clear that the frequency of a class is proportional to the **area of the rectangle**, and NOT to its height.