广东广西海南属于哪个地区(广东广西海南的朋友是否还记得)
广东广西海南属于哪个地区(广东广西海南的朋友是否还记得)213、 标准分bi=(ai-X)/S*100 500T0
90年代及20世纪前几年,广东广西海南都用高考标准分,标准分就是按统计学的方法把原始分换算后得到 的分数,最高分就是900,最低分是100,平均分500分!
标准分的计算过程中如下:
1、 求出平均分X
2、 求标准方差S
3、 标准分bi=(ai-X)/S*100 500
T
0
1
2
3
4
5
6
7
8
9
500
50000000
50400001
50800002
51200002
51599997
51990002
52389997
52789998
53189999
53590000
510
53979999
54380000
54780000
55170000
55570000
55960000
56360000
56750000
57139999
57529998
520
57929999
58319998
58710003
59100002
59480000
59869999
60259998
60640001
61030000
61409998
530
61790001
62169999
62550002
62930000
63309997
63679999
64060003
64429998
64800000
65170002
540
65539998
65910000
66280001
66640002
67000002
67360002
67720002
68080002
68440002
68790001
550
69150001
69499999
69849998
70190001
70539999
70880002
71230000
71569997
71899998
72240001
560
72570002
72909999
73240000
73570001
73890001
74220002
74540001
74860001
75169998
75489998
570
75800002
76109999
76419997
76730001
77029997
77340001
77640003
77939999
78230000
78520000
580
78810000
79100001
79390001
79670000
79949999
80229998
80510002
80779999
81059998
81330001
590
80590003
81860000
82120001
82380003
82639998
82889998
83149999
83399999
83649999
83890003
600
84130001
84380001
84609997
84850001
85079998
85310000
85540003
85769999
85990000
86210001
610
86430001
86650002
86860001
87080002
87290001
87489998
87699997
87900001
88099998
88300002
620
88489997
88690001
88880002
89069998
89249998
89440000
89620000
89800000
89969999
90147001
630
90319997
90490001
90657997
90824002
90987998
91149002
91308999
91465998
91621000
91773999
640
91924000
92072999
92220002
92364001
92506999
92646998
92785001
92922002
93055999
93189001
650
93318999
93448001
93573999
93699002
93822002
93943000
94062001
94178998
94295001
94408000
660
94520003
94630003
94738001
94845003
94950002
95052999
95153999
95253998
95352000
95449001
670
95542997
95637000
95727998
95818001
95907003
95994002
96079999
96164000
96245998
96327001
680
96407002
96485001
96561998
96638000
96711999
96784002
96855998
96925998
96995002
97061998
690
97127998
97193003
97257000
97320002
97381002
97441000
97500002
97557998
97614998
97670001
700
97724998
97777998
97830999
97882003
97931999
97982001
98030001
98076999
98123997
98168999
710
98214000
98256999
98299998
98341000
98382002
98422003
98461002
98500001
98536998
98574001
720
98610002
98645002
98679000
98712999
98745000
98777997
98808998
98839998
98869997
98899001
730
98927999
98956001
98983002
99009699
99035800
99061298
99086303
99110597
99134099
99157602
740
99180198
99202400
99224001
99245101
99265599
99285698
99305302
99324399
99343097
99361300
750
99378997
99396300
99413198
99429703
99445701
99461401
99476600
99491501
99506003
99520099
760
99533898
99547303
99560398
99573100
99585497
99597502
99609298
99620700
99631900
99642700
770
99653298
99663597
99673599
99683303
99692798
99702001
99711001
99719697
99728203
99736500
780
99744499
99752301
99759901
99767298
99774402
99781400
99788201
99794799
99801201
99807400
790
99813402
99819303
99825001
99830502
99835902
99841100
99846202
99851102
99855900
99860501
800
99865001
99869400
99873602
99877697
99881703
99885601
99889302
99892998
99896502
99899900
810
99903238
99906462
99909568
99912602
99915528
99918360
99921119
99923778
99926358
99928862
820
99931288
99933630
99935901
99938101
99940240
99942303
99944288
99946231
99948102
99949908
830
99951661
99953347
99954993
99956578
99958110
99959588
99961030
99962419
99963760
99965048
840
99966311
99967521
99968690
99969822
99970913
99971968
99972987
99973983
99974930
99975848
850
99976742
99977589
99978417
99979222
99979991
99980742
99981463
99982148
99982822
99983472
860
99984092
99984688
99985272
99985832
99986368
99986893
99987388
99987870
99988341
99988788
870
99989218
99989641
99990040
99990427
99990797
99991161
99991506
99991840
99992156
99992466
880
99992764
99993050
99993324
99993593
99993849
99994093
99994332
99994558
99994779
99994987
890
99995190
99995387
99995571
99995750
99995923
99996090
99996251
99996406
99996555
99996698
900
100000000
说明:
1、此表列出了500至900分,各分数与该分数以下考生占考生总数比例的对应关系。表中T栏表示整10标准分,横向0、1、……、9栏表示对应于该行整10分数的个位数值。表内的数值即对应的百分比。,凡500分以上的分数可直接在表中查出该分数以下的考生占考生总数的比例。
如:某一考生的成绩为726分,那么先在表中T栏纵向查720,再横向查6,得表中交叉处的数0.98808998,说明低于726分的考生占考生总数的98.808998%。
如小编物理当初762分,查到99560398,代表我物理成绩超99.560398%的人,1万个人中,才有44人超过我。
我小编总的标准分是645分,查到92646998,代表我超过92.646998%的人,而当年的一本线是642,查到92072999,所以广西当年的一本率是7.93%
2、凡不足500分的分数,先用1000减去该分数再查表,用1减去查表所得的比例数,所得的差即为该分数以下的考生占考生总数的比例。
如:某一考生成绩为453分,那么,1000-453=547分,查表得比例数为0.68080002,然后1-0.68080002=0.31919998,即低于453分的考生占考生总数的31.919998%。