---
url: "https://questionstar.com/principles-of-survey-research/chapter-5/slide-175.html"
title: "Relationship between the Standard Deviation and the Shape of the Normal Distribution"
type: "lehrbuch-slide"
chapter: 5
chapterTitle: "Data Analysis: A Concise Overview of Statistical Techniques"
slide: 175
---

# Relationship between the Standard Deviation and the Shape of the Normal Distribution

*Measures of Dispersion*

![Normal distribution with standard deviations](/principles-of-survey-research/media/normalverteilung.png)

99.7% of the data lie within 3 standard deviations of the mean

95% within 2 standard deviations

68% within 1 Standard Deviation

---

*Slide 175 of 274 · Chapter 5: Data Analysis: A Concise Overview of Statistical Techniques · Principles of Survey Research · Dr. Paul Marx*