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jumlah frekuensi = 30
Me = 1/2 x n = 1/2 x 30 = 15
Me = Tb + [(1/2)n - F₂]/fq₂ x p
= 61,5 + [15 - 14] x 10 / 9
= 61,5 + 10/9
= 61,5 + 1,1
= 62,6
Banyak siswa yg lulus = 1 + 1 + 3 + 9 = 14