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Unit 2 Scaling Techniques

Unit Scaling Techniques

2

Learning Outcomes

The following are the expected outcomes to the learners from the present unit:

◆ learn the meaning and techniques of scaling.

◆ differentiate between Comparative and Non-comparative scales.
◆ familiarise with the concept of reliability and validity in research.

Background

Measurement is followed by scaling procedure in a research activity. We all are using
different types of devices for measurement. For instance, a weighing machine for gauging
weight, a stadiometer for quantifying heights, thermometer to measure temperature etc.
Similarly in research what we want to measure is not always objects, often we need to
quantify qualitative phenomenon like perception,attitudes,preferences etc.Researchers
always face the problem of how to measure or quantify abstract concepts and how to
relate one individual’s response to that with another response. Hence, the problem is
two-fold. First is, how to quantify a response in absolute terms, and the second is, how
to relate it with other responses. This problem is resolved by scaling process. . It is vital
to ensure that the scales used in the instrument are reliable and valid. Understanding of
the different types of scales is essential to ensure quality and credibility of your research.

Keywords

Scaling, Comparative scale, Non-comparative scale, Reliability, Validity

SGOU - SLM - MCom Research Methodology 99