= jumlah individu (number of individu) σ2 W = komponen ragam antar anak dalam pejantan (the variation component progeny within sire) σ2 s = komponen ragam antar pejantan (the variation component within sire) df = derajat bebas (degrees of freedom) SS = jumlah kuadrat (sum of square) MS = kuadrat tengah (mean of square) EMS = hasil kali rerata harapan (expected mean squares).