---
url: "https://questionstar.com/principles-of-survey-research/chapter-4/slide-136.html"
title: "Determining the Sample Size"
type: "lehrbuch-slide"
chapter: 4
chapterTitle: "Sampling"
slide: 136
---

# Determining the Sample Size

*The sample size does not depend on the size of the population — it is determined by the qualitative aspects of the study:*

The sample size does **not** depend on the size of the population — it is determined by the qualitative aspects of the study:

**1. Desired precision of the predictions**

**2. Knowledge about the population parameters**

**3. Number of variables**

**4. Type of analysis**

**5. Importance of the decision**

**6. Response and drop-out rates**

**7. Resource constraints**

![A crowd of people forms the silhouette of a powerful figure — many respondents make for a robust sample.](/principles-of-survey-research/media/sample_strength.png)

---

*Slide 136 of 274 · Chapter 4: Sampling · Principles of Survey Research · Dr. Paul Marx*