---
url: "https://questionstar.com/principles-of-survey-research/chapter-3/slide-106.html"
title: "Explain the purpose"
type: "lehrbuch-slide"
chapter: 3
chapterTitle: "Questionnaire"
slide: 106
---

# Explain the purpose

*Explain why the information is needed — otherwise it seems intrusive.*

### Legitimize the purpose

Explain **why** the information is needed — otherwise it seems intrusive.

Why would a cereal maker be interested in respondents’ **age, income and occupation** ?

### Legitimize the information request

“To understand how the consumption of breakfast cereals differs between people of various ages, incomes and occupations, we need the following information from you …”

---

*Slide 106 of 274 · Chapter 3: Questionnaire · Principles of Survey Research · Dr. Paul Marx*