这样一组数据，如何更科学的确定一个或几个分类点将其分成几类

0.50982529	0.495305603	0.460959767	0.432451687	0.406993035	0.389092444	0.37917027	0.345840625
0.30119872	0.28993161	0.281815323	0.252464584	0.252088624	0.241460182	0.221346681	0.212988105
0.211529937	0.209000683	0.204479464	0.196756259	0.196677304	0.191088142	0.189777046	0.173020049
0.139060522	0.136151543	0.121806663	0.115150489	0.110065347	0.102831274	0.081216895	0.07903916
0.072802645	0.05797959	0.036258564	0.020018017	0.019847309	0.007963061	0.006161181	-0.00050702
-0.00259813	-0.0183957	-0.02530753	-0.02590198	-0.03041991	-0.03910838	-0.04322284	-0.05896476
-0.05903671	-0.07191678	-0.08317119	-0.08927439	-0.10593462	-0.11780951	-0.14562879	-0.1487326
-0.1514277	-0.16859443	-0.1765038	-0.19521252	-0.20242773	-0.23986644	-0.30250049	-0.30647705
-0.31012863	-0.35892587	-0.36871286	-0.38949333	-0.40667385	-0.44884177	-0.4545736	-0.45534076
-0.46007478	-0.53902214	-0.55376323	-0.59711501