Qualitative and Quantitative Measurement - A guide to quantitative measurement - Specialized measures: scales and indexes

3 important questions on Qualitative and Quantitative Measurement - A guide to quantitative measurement - Specialized measures: scales and indexes

What are the advantages of scales and indexes?

  • They give you more information about variables than very simple measures.
  • They make it possible to assess the quality of the measurement, so they increase reliability and validity.
  • They aid in data reduction; they condense and simplify the information that is collected.   

What is a scale?

A measure in which a researcher captures the intensity, direction, level, or potency of a variable construct.

What do exhaustive attributes mean?

All cases fit into one of the attributes of a variable.

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