---
url: "https://questionstar.com/principles-of-survey-research/chapter-5/slide-165.html"
title: "Frequency Polygon"
type: "lehrbuch-slide"
chapter: 5
chapterTitle: "Data Analysis: A Concise Overview of Statistical Techniques"
slide: 165
---

# Frequency Polygon

*Mark the midpoint at the top of each bar of the histogram.*

Mark the **midpoint** at the top of each bar of the histogram.

**Connect** the midpoints with straight lines.

Bring the line back down to **zero** at both ends — and the polygon is complete.

Average Time in Transit

*[Diagramm: Frequency Polygon]*

---

*Slide 165 of 274 · Chapter 5: Data Analysis: A Concise Overview of Statistical Techniques · Principles of Survey Research · Dr. Paul Marx*