McGraw-Hill/IrwinCopyright © 2014 by The McGraw-Hill Companies, Inc. All rights reserved. MEASUREMENT Chapter 11

11-2 Learning Objectives Understand... The distinction between measuring objects, properties, and indicants of properties. The similarities and differences between the four scale types used in measurement and when each is used. The criteria for evaluating good measurement.

11-3 Measurement Select measurable phenomena Develop a set of mapping rules Apply the mapping rule to each phenomenon

11-4 Characteristics of Measurement

11-5 Types of Scales Ordinal interval Nominal Ratio

11-6 Levels of Measurement Ordinal interval Ratio Nominal Classification

11-7 Nominal Scales Mutually Exclusive Collectively Exhaustive Categories Classification Only

11-8 Levels of Measurement interval Ratio Nominal Classification Ordinal Order Classification

11-9 Ordinal Scales Nominal Scale Characteristics Order Implies greater than or less than

11-10 Levels of Measurement Ordinal Ratio Nominal Classification Order Classification interval Order Classification Distance

11-11 Interval Scales Ordinal Scale Characteristics Equality of interval Equality of distance between numbers

11-12 Levels of Measurement Ordinal interval Nominal Classification Order Classification Order Classification Distance Ratio Order Classification Distance Natural Origin

11-13 Ratio Scales Interval Scale Characteristics Absolute Zero

11-14 Examples of Data Scales Rank – first, second, third

11-15 From Investigative to Measurement Questions

11-16 Sources of Error Respondent InstrumentMeasurer Situation

11-17 Evaluating Measurement Tools Criteria Validity Practicality Reliability

11-18 Key Terms Interval scale Mapping rules Measurement Nominal scale Objects Ordinal scale Practicality Properties Ratio scale Reliability Validity