The William Lowell Putnam Mathematical Competition

Statistics on the 2018 Competition

Score-Rank Correspondence

Score	Rank	Score	Rank	Score	Rank	Score	Rank	Score	Rank	Score	Rank	Score	Rank
114	1.5	82	19	68	50	53	114	39	239	25	447.5	11	1055.5
109	3.5	81	20	67	51.5	52	120	38	251.5	24	467.5	10	1157
100	5	80	21	66	55	51	127	37	263.5	23	495.5	9	1235
99	6	79	23	65	59	50	133.5	36	272.5	22	532.5	8	1275
97	7	78	26	64	62	49	145.5	35	281	21	572	7	1309.5
94	8	77	29	62	65.5	48	158.5	34	290.5	20	619	6	1353.5
93	9	76	31	61	70.5	47	167	33	307	19	656.5	5	1437.5
91	10	75	32	60	77	46	172.5	32	331.5	18	681	4	1576.5
89	11.5	74	33	59	82	45	176.5	31	352.5	17	708	3	1805
88	13.5	73	34.5	58	87	44	180.5	30	377	16	733	2	2182.5
87	15	72	36.5	57	93	43	185.5	29	400.5	15	760.5	1	2720
86	16	71	39	56	98.5	42	193	28	414	14	804.5	0	3824
84	17	70	42	55	104	41	206.5	27	424.5	13	866.5
83	18	69	46.5	54	110	40	224	26	433	12	956

Frequency Distribution of Problem Scores of the Top 477 Contestants

Score	A1	A2	A3	A4	A5	A6	B1	B2	B3	B4	B5	B6	Total
10	318	103	104	25	10	31	269	261	228	49	20	43	1461
9	36	12	69	8	5	7	14	34	24	59	2	0	270
8	56	43	35	6	3	2	52	10	30	34	0	0	271
7	6	0	7	1	0	0	15	0	3	9	0	0	41
6	0	18	0	0	0	0	0	0	0	4	0	0	22
5	4	0	1	0	0	0	0	0	2	0	0	0	7
4	0	0	0	0	0	0	0	0	0	1	0	0	1
3	13	0	0	0	0	0	37	0	0	0	0	0	50
2	25	34	57	2	12	2	70	30	100	20	4	2	358
1	7	55	16	9	120	11	2	8	48	11	2	6	295
0	11	143	129	191	136	176	12	81	16	138	166	158	1357
NA	1	69	59	235	191	248	6	52	26	152	283	268	1590

Transcribed to HTML by Kiran S. Kedlaya (kedlaya[at]ucsd[dot]edu).