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= 1/2 x 262
= 131
2. 70/360 x 700 = 225 Ha
n = 5 + 6 + 7 + 10 + 8 + 4
= 40
x = ( 4 x 5) + ( 5 x 6) + ( 6x7) ( 7x10) + (8x8) + ( 9x4)
= 20 + 30 + 42 + 64 + 36
= 192
rata-rata utuk data berfrequensi
mean = 192/40
= 4,8
jawaban soal no 2
luas padi = 70/360 x 700
= 7/36 x700
= 4900/36
= 136,1