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Kelas 6 Matematika
Bab Pengolahan Data

Tinggi rata-rata
= (120 x 2 + 122 x 3 + 124 x 4 + 128 x 2 + 130 x 1)/(2 + 3 + 4 + 2 + 1)
= (240 + 366 + 496 + 256 + 130)/12
= 1.488/12
= 124 cm