---
url: "https://questionstar.com/principles-of-survey-research/chapter-5/slide-190.html"
title: "Hypothesis Testing"
type: "lehrbuch-slide"
chapter: 5
chapterTitle: "Data Analysis: A Concise Overview of Statistical Techniques"
slide: 190
---

# Hypothesis Testing

*Analogy: a rustling in the bushes — is that a lion? H₀: There is no lion in the bushes.*

Step 2 · Setting the significance level

Analogy: **a rustling in the bushes — is that a lion?** H₀ : There is no lion in the bushes.

Significance (α) — probability that a **true** null hypothesis is rejected.

β — probability that a **false** null hypothesis is accepted.

There is no lion, but you run away ↓

|  | Null hypothesis (H₀) is true | Null hypothesis (H₀) is false |
|------|------|------|
| Null hypothesis reject | Type I errorFalse positive | Correct decisionTrue positive |
| Null hypothesis do NOT reject | Correct decisionTrue negative | Type II errorFalse negative |

↑ You stay unconcerned — and the lion eats you

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*Slide 190 of 274 · Chapter 5: Data Analysis: A Concise Overview of Statistical Techniques · Principles of Survey Research · Dr. Paul Marx*