①从上表可以得出 A1=1.78+1.86+1.96+2.00+2.00+1.86 | 6 | =1.91 A2=1.14+1.2+1.18+1.28+1.28+1.29 | 6 | =1.23 B1=1.72+1.74+1.70+1.82+1.82+1.82 | 6 | =1.77 B2=1.24+1.36+1.41+1.38+1.48+1.50 | 6 | =1.40 ∴|A1-B1|+|A2-B2|=0.14+0.17=0.31. ②将x=1.80,y=1.24代入|x-A1|+|y-A2| |x-A1|+|y-A2|=0.11+0.01=0.12 将x=1.80,y=1.24代入|x-B1|+|x-B2| |x-B1|+|x-B2|=0.03+0.16=0.19 ∵0.12<0.19 ∴可认为该蠓虫是B种蠓虫 |