reg.poly
Fits sequential regression models until the
third power.
reg.poly(resp, treat, DFerror, SSerror, DFtreat, SStreat)
Numeric or complex vector containing the response variable.
Numeric or complex vector containing the treatments.
Error degrees of freedom.
Error sum of squares.
Treatments' dregrees of freedom.
Treatments' sum of squares.
Returns coefficients, significance and ANOVA of the fitted regression models.
GOMES, F. P. Curso de Estatistica Experimental. 10a ed. Piracicaba: ESALQ/USP. 1982. 430.