Wfed550

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Wfed550

  1. 1. Scholarly Inquiry in WF ED 11 November 2013
  2. 2.  Measurement – Assigning numbers to phenomena according to rules  Research Design – Collecting and organizing data to reveal relationships and causation  Data Analysis – Inspecting, cleaning, transforming, and modeling data to discover useful information
  3. 3.  Variables – Attributes that can take on two or more mutually exclusive values  Variables describing entities are measured  Measurement involves the interaction between a measurement instrument and the entity measured  Measures can be manifest or latent  Measures must be reliable (accurate) and valid (have meaning)
  4. 4.  A and B must covary   A must precede B   A, and only A, must be the cause of B  Covariation –Changes in cause must be changes in the effect Temporal Precedence — Changes in the cause must precede changes in the effect No plausible alternatives — Changes in cause are only explanation for effect
  5. 5.  Information is desired about a populati0n  But, data is usually from a sample  Problem is to estimate population parameters from sample statistics
  6. 6.  Level – What is typical?  Dispersion – How much do entities vary?  Relationship – Do variables covary?

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