StatisticalMethods MCQ's E.F.A

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1. A psychologist finds that her Cronbach's Alpha score when measuring the internal reliability of her E.F.A comes out as 0.12. What does this mean?

  • This is a cause of concern - Cronbach's Alpha scores should be between 0.7 and 0.8
  • This indicates a high level of internal reliability - Cronbach's Alpha scores should be between 0.1 and 0.15
  • No further analysis is required
  • There may be a problem with her rotation method
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2. The K1 rule suggests what when extracting factors?

  • Select all factors with eigenvalues greater than 1
  • Select all factors lower than 5
  • Select all factors then divide by 1
  • Select all factors with eigenvalues greater than 0.5

3. Describe the purpose of Factor Analysis....

  • To explain patterns of correlations in a smaller number of variables
  • To establish the confirmation of a known psychological effect
  • To explain the extent with which measured variables and their co-variability can be explained by a smaller number of variables
  • To establish causation between a large group of unrelated components

4. The ratio of participants to items in E.F.A should be....

  • 4:1 or 6:1
  • 5:1 or 10:1
  • 5:1 or 20:1
  • 4:3 or 10:1

5. The absolute minimum amount of participants required for E.F.A is...

  • 250
  • 500
  • 100
  • 150

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