Friday, May 7, 2010

ANOVA (Analysis of Variance) Table

ANOVA (Analysis of Variance) Table provides data on the source of variation in the dependent variable (e.g. stock returns).

  • Degree of freedom for the regression sum of squares (a.k.a., the "explained sum of squares") = k (the number of independent variables)
  • Degree of freedom for the error sum of squares = N - k - 1
  • Degree of freedom for the total sum of squares(*) = N - 1
(*)The total sum of squares equals the numerator of the sample variance formula for the dependent variable. The denominator in the sample variance (N-1) equals the degrees of freedom for the numerator (the total sum of squares).

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