---
url: "https://questionstar.com/principles-of-survey-research/chapter-2/slide-039.html"
title: "Comparative Scales: Constant Sum Scaling"
type: "lehrbuch-slide"
chapter: 2
chapterTitle: "Survey: Measurement and Scaling"
slide: 39
---

# Comparative Scales: Constant Sum Scaling

*Respondents distribute a fixed amount (e.g. points, euros, chips, %) entirely across a set of objects — according to a particular criterion.*

### Constant Sum Scaling

Respondents distribute a fixed amount (e.g. points, euros, chips, %) entirely across a set of objects — according to a particular criterion.

Listed below are five attributes of cars. Please distribute **100 points** across these attributes so that the number of points you assign to an attribute reflects its relative importance to you. The more points an attribute receives, the more important it is to you. If an attribute is unimportant to you, assign it **0** points. If one attribute is twice as important as another, assign it **twice as many points** .

| Attribute | Points |
|------|------|
| Speed | 0 |
| Comfort | 15 |
| Transmission type (manual/automatic) | 5 |
| Fuel (petrol/diesel) | 35 |
| Price | 45 |
| Sum | 100 |

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*Slide 39 of 274 · Chapter 2: Survey: Measurement and Scaling · Principles of Survey Research · Dr. Paul Marx*