Rata-rata: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
Baris 309:
|+
|-
! Nilai !! Jumlah murid<br>{{small|a}} !! Nilai tengah<br>{{small|b}} !! a
|-
| 1–20 || 2 || 10
|-
| 21–40 || 5 || 30
|-
| 41–60 || 7 || 50
|-
| 61-80 || 6 || 70
|-
| 81-100 || 5 || 90
|-
| Total || 25
|}
<math>X = \frac{25}{0.
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