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Table 1 Type I Sum of Squares used to construct F test for pattern determination.

From: Quadratic regression analysis for gene discovery and pattern recognition for non-cyclic short time-course microarray experiments

Type I Sum of Squares

Interpretations

F tests

SS(linear)

total variability in the experiment due to the linear effect of time

SS(quadratic | linear)

total variability in the experiment due to the quadratic effect of time that is not contained in SS(linear)

SS(residual)

SS(total) - SS(linear) - SS(quadratic | linear)

 
  1. SS(total) is the total variability in the experiment; df 1, df 2, and df 3 represent the degree of freedoms of SS(linear), SS(quadratic | linear), and SS(residual), respectively.