Question

Which of the following things is needed in building the frequency polygon?

• A. Histogram
• B. Class marks
• C. Suitable scale
• D. Grouped data

Answer 1

Answer: (B), (C), (D)

The correct options are
B Class marks
C Suitable scale
D Grouped data

Frequency polygon is the graphical representation of both discrete and continuous frequency distribution.


There is no need of constructing the histogram but class marks are first calculated, then they are taken on the X-axis and the corresponding frequency on the Y-axis in constructing the frequency polygon.

Suitable scale is needed before plotting the data.