---
url: "https://questionstar.com/principles-of-survey-research/chapter-4/slide-139.html"
title: "Margin of Error Approach to Determining Sample Size"
type: "lehrbuch-slide"
chapter: 4
chapterTitle: "Sampling"
slide: 139
---

# Margin of Error Approach to Determining Sample Size

*Margin of error is the measure of a survey's precision.*

Margin of error

Margin of error is the measure of a survey's precision.

The **smaller** the margin of error, the **more precise** the survey's estimates are.

Result with margin of error

31.55 %

32.45 %

32 %

Margin of error ± 0.45 percentage points

---

*Slide 139 of 274 · Chapter 4: Sampling · Principles of Survey Research · Dr. Paul Marx*