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=> Mean (rata-rata)= Jumlah semua data/banyak data
= (2×3) + (3×8) + (4×2) + (5×1) + (6×2) + (7×1) + (8×1) + (9×1) + (10×2) + (13×1) + (14×1) + (15×5) + (16×1) + (18×1) + (20×1) + (30×1) / 2
= (6 + 24 + 8 + 5 + 12 + 7 + 8 + 9 + 20 + 13 + 14 + 75 + 16 + 18 + 20 + 30 ) / 16
= 285/16
= 17,81
=> Median (nilai tengah)
Urutan data = 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 5, 6, 6, 7, 8, 9, 10, 10, 13, 14, 15, 15, 15, 15, 15, 16, 18, 20, 30
Median = data ke n/2 + (n/2 + 1) / 2
Median = data ke 32/2 + (32/2 +1) / 2
Median = data ke 16 + (16 + 1) / 2
Median = 6 + 7 / 2
Median = 6,5
=> Modus
Modus = 3
~ Tabel frekuensi ada dilampiran
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