Masukkan data (baca cara memasukkan data dalam gretl)
Model Other Linier Model → ANOVA
Pada response variable: select “lebar daun”
Pada treatment variable : select “kode”
OK
Analysis of Variance, response = Lebar_Daun, treatment = Kode:
Sum of squares df Mean square
Treatment 419,844 2 209,922
Residual 0,00294707 27 0,000109151
Total 419,847 29 14,4775
F(2, 27) = 209,922 / 0,000109151 = 1,92323e+006 [p-value 2,66e-070]
Level n mean std. dev
1 10 4,99994 0,0088940
2 10 8,00008 0,012228
3 10 13,9984 0,0099417
Grand mean = 8,99948
Karena nilai p-value=0.000 < alpha=0.05 maka toloak Ho dan simpulkan minimal satu kelompok rata-ratanya berbeda.
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