---
url: "https://questionstar.com/principles-of-survey-research/chapter-5/slide-214.html"
title: "Regression Analysis"
type: "lehrbuch-slide"
chapter: 5
chapterTitle: "Data Analysis: A Concise Overview of Statistical Techniques"
slide: 214
---

# Regression Analysis

*How many product units will we sell if we spend €85.000 on advertising?*

How many product units will we sell if we spend **€85.000** on advertising?

| Advertising spend, €1.000 | Sales, €1.000 |
|------|------|
| 40 | 377 |
| 60 | 507 |
| 70 | 555 |
| 110 | 779 |
| 150 | 869 |
| 160 | 818 |
| 190 | 862 |
| 200 | 817 |

Collected Data

Relationship between Sales and Advertising Spend

- Advertising spend explains **83.6%** of the variance in sales.
- Every additional euro invested in advertising brings **€2.82** of additional sales.
- **€85.000** of advertising spend results in 2.8239 · 85 + 352.07 = 592.1 (thousand €) of sales.

*[Diagramm: Regression Analysis]*

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*Slide 214 of 274 · Chapter 5: Data Analysis: A Concise Overview of Statistical Techniques · Principles of Survey Research · Dr. Paul Marx*