Question

Which of the following must be true so that area of histogram and frequency polygon are equal?

• A. Lower limit of the last class must be twice the upper limit of that class.
• B. They have to be drawn for the same data.
• C. Lower limit of first class must be 0.
• D. Class length must be multiple of 5.

Answer 1

The correct option is B They have to be drawn for the same data.

Area of histogram and frequency polygon drawn for the same data are always equal.

Class length, lower and upper limit do not affect this property.