97.12+12+11+15+16+14+16+12/8 = 108/8 = 13,5
Simpangan rata-rata = (12-13,5)+ (12-13,5) + (11-13,5) + (15-13,5) + (16-13,5) + (14-13,5)+ (16-13,5) + (12-13, 5) /8 = 14/8 = 1,75
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97.12+12+11+15+16+14+16+12/8 = 108/8 = 13,5
Simpangan rata-rata = (12-13,5)+ (12-13,5) + (11-13,5) + (15-13,5) + (16-13,5) + (14-13,5)+ (16-13,5) + (12-13, 5) /8 = 14/8 = 1,75