sayamau bertanya matematika

x = { ( 3 × 2) + ( 2 × 3) + ( 5 × 4 ) + ( 7 × 5 ) + ( 8 × 6 ) + ( 4 × 7 ) + ( 5 × 8 ) + ( 2 × 9 ) } / ( 3 + 2 + 5 + 7 + 8 + 4 + 5 + 2 )
x = ( 6 + 6 + 20 + 35 + 48 + 28 + 40 + 18 ) / 32
x = 201 / 32
x = 6,28

nilai rata2 = 6,28
jumlah siswa yg lulus diatas rata2 = 4 + 5 + 2 = 11 siswa