symbolic description of factorial models for analysis of variance

Symbolic Description of Factorial Models for Analysis of Variance

G. N. Wilkinson and C. E. Rogers

http://www.jstor.org/stable/2346786

Y_ij = m + a_i + b_j + (ab)_ij

A + B + A : B

Y_ij = m + a_i + (ab)_ij

A + A : B

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A * B = A + B + A : B

A / B = A + A : B

blocks / plots 

nitrate * density