Measurement of variables

Published on Jan 17, 2018

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PRESENTATION OUTLINE

Measurement of variables

Chapter 11: by rhonda m. martin, PHD

Measurement
Assignment of numbers or other symbols to characteristics of objects according to prespecified rules.

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Operational data

  • Dimensions
  • Elements
  • Multidimensional
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Measurement: scale, reliable, valid

Chapter 12: By RHonda M. Martin, PHD

Scale
Measurement means gathering data in the form of numbers

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4 types of scales

  • Nominal
  • Ordinal
  • Interval
  • Ratio
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Goodness of Measure

  • Validity p. 221
  • Reliability p. 221
  • Stability
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Reflective & Formative Scales