Chapter Two TF: A Guide to Statistical Techniques

1
Chapter Two (T/F) A Guide to Statistical
Techniques

• DBA 903
• Research Methods III
• J. Schreiber

2
What is the appropriate analysis?

• Research questions
• Degree of relationship among variables
• Significance of group differences
• Prediction of group membership
• Structure
• Timing of events

3
Degree of relationship

• Analyses will take some form of correlation,
  regression, or chi-square
• Which form is determined by
• Number of IVs and DVs
• Nature of the variables (continuous/discrete)
• Are the IVs covariates?

4
Significance of group differences

• Analyses will take some form of ANOVA, ANCOVA, or
  t-tests
• Which form is determined by
• Number of IVs and DVs
• Are DVs measured on the same scale?
• Are the IVs covariates?
• Are the IVs within-subject measures?

5
Prediction of group membership

• Analyses will take some form of discriminant
  function analysis, logit analysis, and logistic
  regression
• Which form is determined by
• Nature of the IVs (continuous/discrete)
• Distribution of the IVs

6
Structure

• Analyses will take some form of principal
  component analysis, factor analysis, or
  structural equation modeling
• Which form is determined by
• Theoretical approach
• Empirical approach

7
Timing of events

• Survival/failure analysis
• Looks at how long it takes for something to
  happen
• Time-series analysis
• Looks at the change in a DV over the course of
  time