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Verified answer
Menentukan Rata"Rumus
Rata" = (Data × Jumlah Data) / Jumlah Data
Penyelesaian
Rata" = (70 × 1) + (75 × 4) + (80 × 3) + (85 × 2) / 1 + 4 + 3 + 2
Rata" = 70 + 300 + 240 + 170 / 10
Rata" = 780 / 10
Rata" = 78 (D)
Verified answer
Pelajaran :MatematikaKelas :6
Bab :5
Nama Bab :Penyajian Data dan Pengolahan Data
Kode mapel:2
Kode :6.2.5
Jawab:
rata-rata=(70cm×1+75cm×4+80cm×3+85cm×2)/(1+4+3+2)
=(70cm+300cm+240cm+170cm)/(10)
=780cm/10
=78cm