A frequency polygon is closed by joining the ends to the horizontal axis at:

  1. the midpoints of the empty classes before the first and after the last class
  2. the origin
  3. the highest frequency
  4. the class boundaries of the first class
Answer

A) the midpoints of the empty classes before the first and after the last class

This keeps the area under the polygon equal to that of the histogram. SLO M-09-C-01 · Knowledge

Mathematics MCQ · More Frequency Distribution MCQs · Practise