Mean
Nilai rata2 gabungan
= ((32 × 76) + 82 + 87) / (32 + 2)
= 2601/34
= 76,5
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Mean
Nilai rata2 gabungan
= ((32 × 76) + 82 + 87) / (32 + 2)
= 2601/34
= 76,5
rata rata nilai matematika setelah digabungkan =2432+82+87=2601/34=76.5