> crd(TRAT, Hemoglobina, quali = FALSE, mcomp = "tukey", sigT = 0.05, sigF = 0.05)
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Analysis of Variance Table
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DF SS MS Fc Pr>Fc
Treatament 1 59.806 59.806 14.495 0.00081149
Residuals 25 103.150 4.126
Total 26 162.956
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CV = 25.89 %
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Shapiro-Wilk normality test
p-value: 0.07082243
According to Shapiro-Wilk normality test at 5% of significance, residuals can be considered normal.
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Adjustment of polynomial models of regression
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Error in treat^2 : non-numeric argument to binary operator
>