Jawab: 14 orang
Penjelasan dengan langkah-langkah:
Rata-rata = (60 x 3) + (70 x 6) + (75 x 7) + (80 x 8) + (90 x 4) + (100 x 2)
3 + 6 + 7 + 8 + 4 + 2
= 180 + 420 + 525 + 640 + 360 + 200
30
= 2.325/30
= 77,5
banyak siswa yang nilainya diatas rata-rata
= 8 + 4 + 2
= 12 + 2
= 14 orang
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Jawab: 14 orang
Penjelasan dengan langkah-langkah:
Rata-rata = (60 x 3) + (70 x 6) + (75 x 7) + (80 x 8) + (90 x 4) + (100 x 2)
3 + 6 + 7 + 8 + 4 + 2
= 180 + 420 + 525 + 640 + 360 + 200
30
= 2.325/30
= 77,5
banyak siswa yang nilainya diatas rata-rata
= 8 + 4 + 2
= 12 + 2
= 14 orang