Data and the Nature of Measurement

08/30/1999


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Table of Contents

Data and the Nature of Measurement

Research Variables

Measuring Variables in Research

Scales of Measurement

Nominal Scales

Ordinal Scales

Interval Scales

Ratio Scales

Controlling Measurement Error

Operational Definitions

Reliability

High Reliability

Low Reliability

Effective Range

Validity

High Validity

Low Validity

Scale Attenuation Effects

Objective Measurement

Summary

Author: Mike Raulin