Nilai rata-rata
[tex] \frac{jumlah \: nilai}{banyak \: siswa} \\ \\ \frac{(6 \times 6) + (7 \times 8) + (8 \times 4) + (9 \times 2)}{(6 + 8 + 4 + 2)} \\ \\ \frac{(36 + 56 + 32 + 18)}{20} \\ \\ \frac{142}{20} = 7,1 \\ \\ nilai \: di \:b awah \: rata - rata \\ nilai \: 6 \: dan \: nilai \: 7 \\ 6 \: siswa + 8 \: siswa \\ 14 \: siswa[/tex]
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Nilai rata-rata
[tex] \frac{jumlah \: nilai}{banyak \: siswa} \\ \\ \frac{(6 \times 6) + (7 \times 8) + (8 \times 4) + (9 \times 2)}{(6 + 8 + 4 + 2)} \\ \\ \frac{(36 + 56 + 32 + 18)}{20} \\ \\ \frac{142}{20} = 7,1 \\ \\ nilai \: di \:b awah \: rata - rata \\ nilai \: 6 \: dan \: nilai \: 7 \\ 6 \: siswa + 8 \: siswa \\ 14 \: siswa[/tex]