- About MAA
- Membership
- MAA Publications
- Periodicals
- Blogs
- MAA Book Series
- MAA Press (an imprint of the AMS)
- MAA Notes
- MAA Reviews
- Mathematical Communication
- Information for Libraries
- Author Resources
- Advertise with MAA
- Meetings
- Competitions
- Programs
- Communities
- MAA Sections
- SIGMAA
- MAA Connect
- Students
- MAA Awards
- Awards Booklets
- Writing Awards
- Teaching Awards
- Service Awards
- Research Awards
- Lecture Awards
- Putnam Competition Individual and Team Winners
- D. E. Shaw Group AMC 8 Awards & Certificates
- Maryam Mirzakhani AMC 10 A Awards & Certificates
- Two Sigma AMC 10 B Awards & Certificates
- Jane Street AMC 12 A Awards & Certificates
- Akamai AMC 12 B Awards & Certificates
- High School Teachers
- News
You are here
Missing Title
American Mathematics Competitions
2005 AMC 10 A Results for Louisiana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 351
Number of unofficial participants: 25
Average score of participants: 74.0
Average score for female students is: 72.1 ( 143 Students)
Average score for male students is: 75.8 ( 196 Students)
Average score for unspecified gender is 69.2 ( 12 Students)
Average score for grade 10 is: 76.0 ( 216 Students)
Average score for grade 9 is: 67.5 ( 116 Students)
Average score for grade 8 and below is: 96.8 ( 15 Students)
Average score with unknown grade: 72.4 ( 4 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 5
Number of schools returning results 16
Average school winning score 105.00
American Mathematics Competitions
2005 AMC 12 A Results for Louisiana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 564
Number of unofficial participants: 14
Average score of participants: 74.8
Average score for female students is: 71.8 ( 256 Students)
Average score for male students is: 77.5 ( 298 Students)
Average score for unspecified gender is 72.1 ( 10 Students)
Average score for grade 12 is: 76.2 ( 307 Students)
Average score for grade 11 is: 73.4 ( 240 Students)
Average score for grade 10 is: 70.5 ( 13 Students)
Average score for grade 9 is: 61.5 ( 1 Student)
Average score with unknown grade: 73.8 ( 3 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 40
Number of schools returning results 23
Average school winning score 100.96
Average school team score 282.11
American Mathematics Competitions
2005 AMC 10 B Results for Louisiana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 493
Number of unofficial participants: 0
Average score of participants: 67.6
Average score for female students is: 65.8 ( 254 Students)
Average score for male students is: 69.4 ( 224 Students)
Average score for unspecified gender is 68.5 ( 15 Students)
Average score for grade 10 is: 73.0 ( 226 Students)
Average score for grade 9 is: 62.6 ( 256 Students)
Average score for grade 8 and below is: 98.0 ( 1 Student)
Average score with unknown grade: 67.9 ( 10 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 5
Average school winning score 98.10
American Mathematics Competitions
2005 AMC 12 B Results for Louisiana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 483
Number of unofficial participants: 0
Average score of participants: 75.8
Average score for female students is: 74.7 ( 279 Students)
Average score for male students is: 77.8 ( 186 Students)
Average score for unspecified gender is 72.1 ( 18 Students)
Average score for grade 12 is: 75.4 ( 204 Students)
Average score for grade 11 is: 76.0 ( 261 Students)
Average score for grade 10 is: 82.1 ( 8 Students)
Average score for grade 9 is: 80.8 ( 4 Students)
Average score with unknown grade: 69.5 ( 6 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 13
Number of schools returning results 8
Average school winning score 102.75
Average school team score 277.56
2005 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
351.5 1 1
344.5 1 2
340.0 1 3
335.0 1 4
330.0 1 5
328.5 1 6
324.0 1 7
321.0 1 8
317.0 1 9
303.0 1 10
296.5 2 11
295.0 1 13
292.0 1 14
289.5 1 15
287.0 1 16
278.5 1 17
275.0 1 18
273.5 1 19
270.0 1 20
267.5 1 21
265.5 1 22
254.5 1 23
241.5 1 24
241.0 1 25
234.5 1 26
229.0 1 27
226.5 1 28
207.0 1 29
202.5 1 30
191.5 1 31
2005 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
146.5 1
144.0 1
138.0 1
129.0 1
126.5 1
124.0 1
123.0 1
122.5 1
120.5 1 1
119.5 3
119.0 1
117.0 1 3
116.0 1 1 2
115.0 1 1
113.5 1
112.5 1
112.0 1
111.5 1
110.0 1 1
109.0 2 3
108.0 4 1
107.5 1 1 1
106.5 1 1 1
105.5 5 1
105.0 1
104.5 2 1 1
104.0 1 2 4
103.0 1 4 3
102.5 1 1
102.0 6 3 3
101.5 1
101.0 8 1
100.5 1 2 1
100.0 1
99.5 3 1 3
99.0 1
98.5 6 3 3 2
98.0 2 4 3
97.5 1 3
97.0 3 1 3 2
96.5 1 1
96.0 6 3 2 3
95.0 14 11 2 1
94.5 1
94.0 5 1 1
93.5 3 4 2 2
93.0 1 3 1
92.5 8 5 4 5
92.0 3
91.5 7 6 6 1
91.0 2 2 3 3
90.5 5 5
90.0 7 5 4 2
89.5 1 2
89.0 9 20 4 5
88.5 2 1 1 3
88.0 5 8 2 1
87.5 2 5 1 3
87.0 4 5 4 2
86.5 6 8 4 7
86.0 2 2 3
85.5 3 10 2 5
85.0 2 2 3 3
84.5 7 7 4 2
84.0 5 7 2 7
83.5 6 11 2 1
83.0 14 5 2 4
82.5 1 2 2 2
82.0 6 18 5 6
81.5 1 3 3 3
81.0 12 10 3 7
80.5 6 9 3 4
80.0 2 6 1 2
79.5 10 10 4 5
79.0 2 1 1 4
78.5 13 9 5 8
78.0 4 5 4 10
77.5 10 5 5 5
77.0 13 8 3 6
76.5 5 8 1 3
76.0 10 14 9 2
75.5 2 3 1 7
75.0 7 8 5 7
74.5 7 4 3 3
74.0 5 2 2
73.5 11 10 6 3
73.0 4 9 3 6
72.5 12 10 11 3
72.0 2 5 5 9
71.5 7 6 5 4
71.0 9 13 6 10
70.5 7 7 1 4
70.0 7 5 6 5
69.5 1 4 4 4
69.0 10 9 2 3
68.5 8 3 4 6
68.0 12 4 3 7
67.5 8 3 5 4
67.0 4 6 1 7
66.5 7 6 3 3
66.0 4 8 5 10
65.5 5 1 6 6
65.0 8 4 1 4
64.5 2 3 5 5
64.0 8 5 7 4
63.5 6 4 3 5
63.0 2 1 5 3
62.5 6 2 10
62.0 5 3 2 7
61.5 5 1 1 4
61.0 2 1 1 6
60.5 4 1 4 2
60.0 4 5 5 6
59.5 3 4 1 4
59.0 5 5 2 4
58.5 5 3 2 5
58.0 3 2 3
57.5 3 1 4 4
57.0 3 3 4 6
56.5 4 1 4 5
56.0 2 1 5 5
55.5 5 1 2
55.0 2 1 2 4
54.5 4 2 3
54.0 9 3 3 9
53.5 1 4 2 2
53.0 4 3 2
52.5 4 3 3
52.0 2 2 3
51.5 1 1 2 1
51.0 3 2 3 1
50.5 1 3 1
50.0 4 2
49.5 2 3 3
49.0 1 6
48.5 1 1 1 2
48.0 10 4 3 12
47.5 1 1 1 1
47.0 2 1 3
46.5 1 1 1 1
46.0 2 2
45.5 1 1 2
45.0 1 1 5
44.5 2 3
44.0 1 2
43.5 2 4
43.0 3
42.5 1 1 1
42.0 3 3 1 12
41.0 1 2
40.5 2
40.0 1
39.5 1 1
39.0 1 1
38.5 2 1 4
38.0 1
37.5 1 1 1
37.0 2
36.5 1 1
36.0 3 7 6
35.5 1
34.5 1
33.0 1
32.5 1
31.5 1
30.5 1
30.0 1 3 1 6
29.0 1
28.0 1
27.0 1
26.5 1
24.0 2 1 2
20.5 1
18.0 2
American Mathematics Competitions
2005 AMC 10 A Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0 1
149.5 124.5 99.5 2
149.0 124.0 99.0
148.5 123.5 98.5 2 1
148.0 123.0 98.0 3 1
147.5 122.5 1 97.5
147.0 122.0 97.0 3
146.5 1 121.5 96.5
146.0 121.0 96.0 1 1
145.5 120.5 95.5
145.0 120.0 95.0 1
144.5 119.5 2 1 94.5
144.0 1 119.0 1 94.0 1
143.5 118.5 93.5 2
143.0 118.0 93.0 2 1
142.5 117.5 92.5 3 1
142.0 117.0 1 92.0 3
141.5 116.5 91.5 3 3
141.0 116.0 1 91.0 2 1
140.5 115.5 90.5
140.0 115.0 90.0 2 1
139.5 114.5 89.5
139.0 114.0 89.0 1 3
138.5 113.5 1 88.5 1
138.0 113.0 88.0 1 1
137.5 112.5 87.5 1
137.0 112.0 87.0 4
136.5 111.5 86.5 4
136.0 111.0 86.0 1 1
135.5 110.5 85.5 1 1
135.0 110.0 1 85.0 2 1
134.5 109.5 84.5 3 1
134.0 109.0 84.0 2
133.5 108.5 83.5 1 1
133.0 108.0 83.0 2
132.5 107.5 1 82.5 1 1
132.0 107.0 82.0 4 1
131.5 106.5 1 81.5 2
131.0 106.0 81.0 3
130.5 105.5 80.5 1 1
130.0 105.0 1 80.0 1
129.5 104.5 1 79.5 2 2
129.0 1 104.0 1 1 79.0 1
128.5 103.5 78.5 4 1
128.0 103.0 2 2 78.0 1 3
127.5 102.5 1 77.5 5
127.0 102.0 77.0 2 1
126.5 1 101.5 76.5 1
126.0 101.0 76.0 6 3
125.5 100.5 1 1 75.5 1
American Mathematics Competitions
2005 AMC 10 A Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 2 3 50.0 2 2 25.0
74.5 2 1 49.5 2 1 24.5
74.0 2 49.0 1 24.0 1
73.5 4 2 48.5 1 23.5
73.0 2 1 48.0 3 23.0
72.5 7 4 47.5 1 22.5
72.0 2 3 47.0 22.0
71.5 4 1 46.5 1 21.5
71.0 4 2 46.0 1 21.0
70.5 1 45.5 1 20.5
70.0 3 2 45.0 1 20.0
69.5 1 3 44.5 19.5
69.0 1 1 44.0 1 19.0
68.5 4 43.5 18.5
68.0 2 1 43.0 18.0
67.5 2 2 42.5 1 17.5
67.0 1 42.0 1 17.0
66.5 2 1 41.5 16.5
66.0 3 2 41.0 16.0
65.5 1 5 40.5 15.5
65.0 1 40.0 15.0
64.5 3 2 39.5 1 14.5
64.0 4 1 39.0 14.0
63.5 2 1 38.5 1 13.5
63.0 4 1 38.0 13.0
62.5 37.5 1 12.5
62.0 2 37.0 12.0
61.5 1 36.5 1 11.5
61.0 1 36.0 11.0
60.5 1 3 35.5 10.5
60.0 3 2 35.0 10.0
59.5 1 34.5 9.5
59.0 1 1 34.0 9.0
58.5 2 33.5 8.5
58.0 2 33.0 1 8.0
57.5 3 1 32.5 7.5
57.0 3 1 32.0 7.0
56.5 4 31.5 1 6.5
56.0 1 4 31.0 6.0
55.5 1 30.5 5.5
55.0 1 1 30.0 1 5.0
54.5 29.5 4.5
54.0 2 1 29.0 4.0
53.5 2 28.5 3.5
53.0 1 2 28.0 3.0
52.5 2 1 27.5 2.5
52.0 1 1 27.0 2.0
51.5 1 26.5 1.5
51.0 1 2 26.0 1.0
50.5 3 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 A Results for Louisiana
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
146.5 1
144.0 1
129.0 1
126.5 1
122.5 1
119.5 3
119.0 1
117.0 1
116.0 1
113.5 1
110.0 1
107.5 1
106.5 1
105.0 1
104.5 1
104.0 2
103.0 2 2
102.5 1
100.5 2
100.0 1
99.5 1 2
98.5 3
98.0 4
97.0 1 1 1
96.0 2
95.0 2
94.0 1
93.5 2
93.0 1 1 1
92.5 4
92.0 1 2
91.5 1 5
91.0 1 2
90.0 1 2 1
89.0 1 1 2
88.5 1
88.0 1 1
87.5 1
87.0 1 3
86.5 1 3
86.0 2
85.5 2
85.0 3
84.5 2 2
84.0 1 1
83.5 1 1
83.0 2
82.5 2
82.0 1 4
81.5 2 1
81.0 1 2
80.5 1 1 1
80.0 1
79.5 4
79.0 1
78.5 1 4
78.0 1 3
77.5 1 4
77.0 3
76.5 1
76.0 3 6
75.5 1
75.0 2 3
74.5 1 2
74.0 2
73.5 1 5
73.0 3
72.5 5 6
72.0 5
71.5 5
71.0 2 4
70.5 1
70.0 2 4
69.5 1 1 2
69.0 2
68.5 3 1
68.0 1 2
67.5 2 3
67.0 1
66.5 1 2
66.0 1 4
65.5 2 4
65.0 1
64.5 3 2
64.0 4 3
63.5 1 2
63.0 3 2
62.0 2
61.5 1
61.0 1
60.5 1 2 1
60.0 5
59.5 1
59.0 2
58.5 2
58.0 1 1
57.5 1 3
57.0 2 2
56.5 3 1
56.0 3 2
55.5 1
55.0 2
54.0 2 1
53.5 1 1
53.0 3
52.5 1 2
52.0 2
51.5 2
51.0 2 1
50.5 2 1
50.0 3 1
49.5 1 2
49.0 1
48.5 1
48.0 1 2
47.5 1
46.5 1
46.0 2
45.5 1
45.0 1
44.0 1
42.5 1
42.0 1
39.5 1
38.5 1
37.5 1
36.5 1
33.0 1
31.5 1
30.0 1
24.0 1
20.5 1
American Mathematics Competitions
2005 AMC 10 A Results for Louisiana
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.17 0.23 0.31 8.40* 0.54 0.34 0.00
2 0.11 0.06 5.38* 0.06 1.40 2.99 0.00
3 0.06 9.00* 0.37 0.23 0.09 0.26 0.00
4 0.51 2.05* 1.65 0.40 0.40 4.99 0.00
5 5.73* 0.43 3.68 0.09 0.06 0.03 0.00
6 0.31 4.59* 3.16 0.17 0.09 1.68 0.00
7 0.66 3.85* 0.31 0.48 0.68 4.02 0.00
8 1.34 0.14 3.96* 0.09 0.09 4.39 0.00
9 1.37 5.33* 1.03 0.26 0.31 1.71 0.00
10 1.68* 0.51 0.63 0.34 0.06 6.75 0.03
11 0.46 2.17* 0.06 0.57 0.14 6.61 0.00
12 0.37 1.17* 0.31 0.11 0.54 7.49 0.00
13 1.42 0.54 0.28 0.26 0.74* 6.75 0.00
14 0.77 0.46 0.51 0.31 2.22* 5.73 0.00
15 0.34 0.43 0.77 1.14 0.94* 6.38 0.00
16 0.57 0.14 0.83 2.17* 0.09 6.21 0.00
17 0.37 0.48 0.28 1.71* 0.31 6.84 0.00
18 1.40* 1.99 1.23 2.85 0.20 2.34 0.00
19 0.51 0.60 0.77 3.08* 0.77 4.27 0.00
20 0.63* 0.31 0.31 0.28 0.26 8.21 0.00
21 1.40 0.54* 0.11 0.20 0.46 7.29 0.00
22 0.37 0.46 0.14 2.45* 0.54 6.04 0.00
23 0.14 0.43 1.25* 1.00 0.57 6.61 0.00
24 0.88 0.60* 0.23 0.14 0.03 8.09 0.03
25 0.20 0.54 0.63 0.83* 0.11 7.69 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
American Mathematics Competitions
2005 AMC 12 A Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5 2 1
149.0 124.0 1 99.0
148.5 123.5 98.5 6
148.0 123.0 98.0 2
147.5 122.5 97.5 1
147.0 122.0 97.0 2 1
146.5 121.5 96.5
146.0 121.0 96.0 1 4
145.5 120.5 1 95.5
145.0 120.0 95.0 10 3
144.5 119.5 94.5 1
144.0 119.0 94.0 3 2
143.5 118.5 93.5 1 2
143.0 118.0 93.0
142.5 117.5 92.5 7 1
142.0 117.0 92.0
141.5 116.5 91.5 4 3
141.0 116.0 1 91.0 1 1
140.5 115.5 90.5 3 2
140.0 115.0 1 90.0 7
139.5 114.5 89.5 1
139.0 114.0 89.0 5 4
138.5 113.5 88.5 1 1
138.0 1 113.0 88.0 1 4
137.5 112.5 1 87.5 2
137.0 112.0 87.0 3 1
136.5 111.5 86.5 4 2
136.0 111.0 86.0
135.5 110.5 85.5 1 2
135.0 110.0 1 85.0 1 1
134.5 109.5 84.5 2 5
134.0 109.0 2 84.0 3 2
133.5 108.5 83.5 1 5
133.0 108.0 2 2 83.0 10 3
132.5 107.5 1 82.5 1
132.0 107.0 82.0 4 2
131.5 106.5 1 81.5 1
131.0 106.0 81.0 7 5
130.5 105.5 3 2 80.5 2 4
130.0 105.0 80.0 2
129.5 104.5 1 1 79.5 6 3
129.0 104.0 1 79.0 2
128.5 103.5 78.5 8 5
128.0 103.0 1 78.0 3 1
127.5 102.5 1 77.5 4 6
127.0 102.0 6 77.0 9 4
126.5 101.5 76.5 3 2
126.0 101.0 5 3 76.0 4 6
125.5 100.5 1 75.5 1 1
American Mathematics Competitions
2005 AMC 12 A Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 3 4 50.0 25.0
74.5 3 4 49.5 2 24.5
74.0 49.0 24.0
73.5 5 6 48.5 1 23.5
73.0 4 48.0 8 2 23.0
72.5 6 5 47.5 1 22.5
72.0 1 1 47.0 2 22.0
71.5 2 5 46.5 1 21.5
71.0 4 5 46.0 21.0
70.5 3 4 45.5 1 20.5
70.0 3 4 45.0 1 20.0
69.5 1 44.5 1 1 19.5
69.0 2 8 44.0 19.0
68.5 6 1 43.5 2 18.5
68.0 7 5 43.0 18.0
67.5 3 5 42.5 1 17.5
67.0 2 2 42.0 2 1 17.0
66.5 3 4 41.5 16.5
66.0 1 3 41.0 16.0
65.5 2 2 40.5 15.5
65.0 5 3 40.0 15.0
64.5 1 1 39.5 1 14.5
64.0 5 2 39.0 14.0
63.5 6 38.5 1 13.5
63.0 1 1 38.0 1 13.0
62.5 2 4 37.5 1 12.5
62.0 3 2 37.0 2 12.0
61.5 2 3 36.5 1 11.5
61.0 2 36.0 2 1 11.0
60.5 1 3 35.5 1 10.5
60.0 3 1 35.0 10.0
59.5 1 2 34.5 9.5
59.0 3 2 34.0 9.0
58.5 1 3 33.5 8.5
58.0 2 1 33.0 8.0
57.5 3 32.5 7.5
57.0 1 2 32.0 7.0
56.5 1 3 31.5 6.5
56.0 2 31.0 6.0
55.5 3 2 30.5 5.5
55.0 1 1 30.0 1 5.0
54.5 3 1 29.5 4.5
54.0 2 7 29.0 4.0
53.5 1 28.5 3.5
53.0 2 2 28.0 1 3.0
52.5 3 1 27.5 2.5
52.0 2 27.0 2.0
51.5 1 26.5 1.5
51.0 3 26.0 1.0
50.5 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 A Results for Louisiana
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
138.0 1
124.0 1
120.5 1
116.0 1
115.0 1
112.5 1
110.0 1
109.0 2
108.0 1 3
107.5 1
106.5 1
105.5 4 1
104.5 1 1
104.0 1
103.0 1
102.5 1
102.0 3 3
101.0 1 7
100.5 1
99.5 1 1 1
98.5 2 4
98.0 2
97.5 1
97.0 2 1
96.0 1 5
95.0 2 12
94.5 1
94.0 3 2
93.5 2 1
92.5 4 4
91.5 2 5
91.0 1 1
90.5 2 3
90.0 3 4
89.5 1
89.0 7 2
88.5 1 1
88.0 2 3
87.5 2
87.0 2 2
86.5 2 4
85.5 2 1
85.0 2
84.5 2 5
84.0 3 2
83.5 3 3
83.0 4 10
82.5 1
82.0 2 4
81.5 1
81.0 4 8
80.5 2 4
80.0 1 1
79.5 2 8
79.0 2
78.5 1 7 5
78.0 2 1 1
77.5 2 8
77.0 9 4
76.5 1 4
76.0 5 5
75.5 1 1
75.0 4 2 1
74.5 4 3
73.5 7 4
73.0 2 2
72.5 1 5 6
72.0 2
71.5 1 3 3
71.0 5 4
70.5 2 5
70.0 6 1
69.5 1
69.0 1 3 6
68.5 2 5 1
68.0 6 6
67.5 2 6
67.0 2 2
66.5 1 4 2
66.0 2 2
65.5 1 1 3
65.0 6 2
64.5 2
64.0 6 2
63.5 3 3
63.0 2
62.5 1 5
62.0 2 3
61.5 1 1 2 1
61.0 2
60.5 1 3
60.0 2 2
59.5 2 1
59.0 2 2 1
58.5 1 4
58.0 2 1
57.5 1 2
57.0 2 1
56.5 1 3
56.0 1 1
55.5 2 3
55.0 1 1
54.5 2 2
54.0 5 4
53.5 1
53.0 3 1
52.5 4
52.0 1 1
51.5 1
51.0 1 2
49.5 2
48.5 1
48.0 3 7
47.5 1
47.0 2
46.5 1
45.5 1
45.0 1
44.5 1 1
43.5 1 1
42.5 1
42.0 1 2
39.5 1
38.5 2
38.0 1
37.5 1
37.0 1 1
36.5 1
36.0 3
35.5 1
30.0 1
28.0 1
American Mathematics Competitions
2005 AMC 12 A Results for Louisiana
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.05 0.11 0.11 9.26* 0.11 0.37 0.00
2 0.00 9.40* 0.16 0.28 0.04 0.12 0.00
3 0.44 3.35* 1.21 0.37 0.67 3.95 0.00
4 6.22* 0.34 3.32 0.02 0.02 0.09 0.00
5 0.18 6.58* 2.30 0.07 0.04 0.83 0.00
6 0.66 4.20* 0.25 0.44 0.99 3.46 0.00
7 0.78 0.25 6.24* 0.07 0.04 2.62 0.00
8 0.41 0.53 0.35 1.79* 0.32 6.60 0.00
9 2.96* 0.48 0.90 0.39 0.05 5.20 0.02
10 0.41 2.55* 0.20 0.85 0.14 5.85 0.00
11 0.82 0.51 0.51 0.35 2.98* 4.82 0.00
12 0.92 0.53 0.28 3.03* 1.17 4.06 0.00
13 0.23 0.25 0.62 2.94* 0.48 5.48 0.00
14 0.59 0.41 3.35 0.67* 0.51 4.47 0.00
15 0.25 0.35 1.28* 0.80 0.89 6.44 0.00
16 0.32 0.27 0.76 0.57* 0.37 7.71 0.00
17 1.76* 1.06 0.89 0.43 0.35 5.51 0.00
18 0.51* 0.51 0.30 0.41 0.12 8.14 0.00
19 1.19 1.76* 1.29 0.37 0.87 4.52 0.00
20 0.39 0.18 0.39 0.14 0.23* 8.67 0.00
21 0.34 0.39 0.41* 0.32 0.16 8.39 0.00
22 0.44 0.53* 0.43 0.35 0.30 7.94 0.00
23 0.57 0.44* 0.35 0.25 0.39 8.00 0.00
24 0.12 0.25* 0.30 0.23 0.11 8.99 0.00
25 0.35 0.46 0.37* 0.27 0.16 8.39 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
American Mathematics Competitions
2005 AMC 10 B Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5
149.0 124.0 99.0 1
148.5 123.5 98.5 1
148.0 123.0 98.0 2 1
147.5 122.5 97.5
147.0 122.0 97.0 1 1
146.5 121.5 96.5 1
146.0 121.0 96.0 2 1
145.5 120.5 95.5
145.0 120.0 95.0 1
144.5 119.5 94.5
144.0 119.0 94.0
143.5 118.5 93.5 2
143.0 118.0 93.0 1
142.5 117.5 92.5 2 3
142.0 117.0 2 1 92.0
141.5 116.5 91.5 1
141.0 116.0 1 1 91.0 3
140.5 115.5 90.5
140.0 115.0 90.0 1 1
139.5 114.5 89.5 1 1
139.0 114.0 89.0 2 3
138.5 113.5 88.5 2 1
138.0 113.0 88.0 1
137.5 112.5 87.5 2 1
137.0 112.0 1 87.0 2
136.5 111.5 1 86.5 5 2
136.0 111.0 86.0 2 1
135.5 110.5 85.5 5
135.0 110.0 85.0 2 1
134.5 109.5 84.5 2
134.0 109.0 84.0 3 3
133.5 108.5 83.5 1
133.0 108.0 83.0 2 2
132.5 107.5 1 82.5 1 1
132.0 107.0 82.0 5
131.5 106.5 81.5 2 1
131.0 106.0 81.0 6 1
130.5 105.5 1 80.5 3 1
130.0 105.0 80.0 1 1
129.5 104.5 79.5 2 3
129.0 104.0 2 1 79.0 2 2
128.5 103.5 78.5 6 2
128.0 103.0 1 2 78.0 5 5
127.5 102.5 77.5 2 3
127.0 102.0 2 1 77.0 1 5
126.5 101.5 1 76.5 2
126.0 101.0 76.0 1 1
125.5 100.5 1 75.5 4 3
American Mathematics Competitions
2005 AMC 10 B Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 2 5 50.0 1 1 25.0
74.5 3 49.5 2 1 24.5
74.0 1 1 49.0 2 4 24.0 1 1
73.5 1 2 48.5 2 23.5
73.0 1 5 48.0 7 5 23.0
72.5 3 47.5 1 22.5
72.0 4 5 47.0 1 2 22.0
71.5 1 3 46.5 1 21.5
71.0 4 5 46.0 1 1 21.0
70.5 3 1 45.5 1 20.5
70.0 1 4 45.0 2 2 20.0
69.5 4 44.5 2 1 19.5
69.0 2 1 44.0 1 1 19.0
68.5 2 4 43.5 4 18.5
68.0 5 2 43.0 18.0 1 1
67.5 2 2 42.5 1 17.5
67.0 3 4 42.0 3 9 17.0
66.5 1 2 41.5 16.5
66.0 6 4 41.0 1 1 16.0
65.5 2 4 40.5 2 15.5
65.0 4 40.0 1 15.0
64.5 2 3 39.5 14.5
64.0 2 2 39.0 1 14.0
63.5 2 2 38.5 4 13.5
63.0 1 1 38.0 13.0
62.5 5 4 37.5 1 12.5
62.0 5 1 37.0 12.0
61.5 2 2 36.5 11.5
61.0 3 3 36.0 2 4 11.0
60.5 2 35.5 10.5
60.0 2 3 35.0 10.0
59.5 2 2 34.5 1 9.5
59.0 2 2 34.0 9.0
58.5 2 3 33.5 8.5
58.0 1 2 33.0 8.0
57.5 3 1 32.5 1 7.5
57.0 3 3 32.0 7.0
56.5 2 3 31.5 6.5
56.0 2 2 31.0 6.0
55.5 2 30.5 1 5.5
55.0 2 2 30.0 2 4 5.0
54.5 1 2 29.5 4.5
54.0 3 5 29.0 1 4.0
53.5 2 28.5 3.5
53.0 2 28.0 3.0
52.5 2 1 27.5 2.5
52.0 2 1 27.0 1 2.0
51.5 1 26.5 1 1.5
51.0 1 26.0 1.0
50.5 1 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 B Results for Louisiana
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
117.0 3
116.0 1 1
112.0 1
111.5 1
107.5 1
105.5 1
104.0 4
103.0 3
102.0 3
101.5 1
100.5 1
99.0 1
98.5 2
98.0 1 2
97.0 2
96.5 1
96.0 3
95.0 1
93.5 1 1
93.0 1
92.5 5
91.5 1
91.0 1 2
90.0 1 1
89.5 2
89.0 3 2
88.5 3
88.0 1
87.5 3
87.0 1 1
86.5 1 5 1
86.0 2 1
85.5 2 3
85.0 2 1
84.5 2
84.0 3 4
83.5 1
83.0 1 2 1
82.5 1 1
82.0 2 4
81.5 2 1
81.0 2 5
80.5 3 1
80.0 2
79.5 3 2
79.0 2 2
78.5 3 5
78.0 5 5
77.5 3 2
77.0 3 2 1
76.5 1 1 1
76.0 1 1
75.5 6 1
75.0 4 3
74.5 3
74.0 2
73.5 2 1
73.0 4 2
72.5 1 2
72.0 5 4
71.5 2 2
71.0 5 5
70.5 2 2
70.0 5
69.5 2 2
69.0 1 2
68.5 1 4 1
68.0 3 4
67.5 1 3
67.0 5 2
66.5 2 1
66.0 8 1 1
65.5 4 2
65.0 2 2
64.5 2 3
64.0 1 3
63.5 2 2 1
63.0 1 2
62.5 5 4 1
62.0 6 1
61.5 2 2
61.0 3 3
60.5 1 1
60.0 5 1
59.5 3 1
59.0 2 2
58.5 2 3
58.0 2 1
57.5 3 1
57.0 5 1
56.5 2 3
56.0 2 2 1
55.5 2
55.0 3 1
54.5 3
54.0 7 2
53.5 1 1
53.0 1 1
52.5 3
52.0 2 1
51.5 1
51.0 1
50.5 1
50.0 1 1
49.5 2 1
49.0 2 4
48.5 1 1
48.0 9 3
47.5 1
47.0 2 1
46.5 1
46.0 2
45.5 1 1
45.0 4 1
44.5 2 1
44.0 1 1
43.5 3 1
42.5 1
42.0 9 3
41.0 2
40.5 2
40.0 1
39.0 1
38.5 4
37.5 1
36.0 5 1
34.5 1
32.5 1
30.5 1
30.0 4 2
29.0 1
27.0 1
26.5 1
24.0 2
18.0 2
American Mathematics Competitions
2005 AMC 10 B Results for Louisiana
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 8.11* 0.37 0.69 0.24 0.43 0.16 0.00
2 0.30 0.34 0.14 8.17* 0.41 0.63 0.00
3 0.04 1.22 3.00 4.18* 0.89 0.67 0.00
4 1.20 0.34 0.95 3.69* 0.30 3.51 0.00
5 0.18 0.14 8.36* 0.16 0.59 0.57 0.00
6 0.26 7.61* 0.39 0.39 0.43 0.93 0.00
7 0.73 0.85* 1.03 1.08 0.71 5.60 0.00
8 4.26* 0.34 1.64 0.08 0.14 3.53 0.00
9 0.61 0.75 3.14 3.33* 0.99 1.18 0.00
10 1.36* 0.99 0.79 0.69 0.55 5.62 0.00
11 0.61 0.61 0.37 1.97 1.58* 4.87 0.00
12 0.79 1.91 0.57 0.51 0.34* 5.88 0.00
13 0.77 0.95 1.52* 1.50 0.43 4.83 0.00
14 0.39 0.43 1.42* 2.56 0.85 4.36 0.00
15 1.40 0.79 0.99 3.39* 1.03 2.39 0.00
16 0.55 1.03 1.01 0.34* 0.18 6.88 0.00
17 0.87 2.31* 1.76 0.43 0.39 4.24 0.00
18 0.57 5.07 1.01 1.28* 0.67 1.40 0.00
19 0.73 4.60* 0.89 0.69 0.77 2.31 0.00
20 0.89 0.63 1.10* 0.75 0.45 6.17 0.02
21 0.51* 0.89 0.65 0.53 0.24 7.18 0.00
22 0.91 1.34 0.41* 0.43 0.47 6.43 0.02
23 3.65 0.51 0.51* 0.30 0.20 4.83 0.00
24 0.57 0.55 0.65 0.79 0.67* 6.75 0.02
25 0.65 0.59 2.62* 0.39 0.49 5.27 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
American Mathematics Competitions
2005 AMC 12 B Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5 1
149.0 124.0 99.0
148.5 123.5 98.5 1 2
148.0 123.0 1 98.0
147.5 122.5 97.5 2 1
147.0 122.0 97.0 1
146.5 121.5 96.5 1
146.0 121.0 96.0 3
145.5 120.5 1 95.5
145.0 120.0 95.0 9 2
144.5 119.5 94.5
144.0 119.0 94.0 1
143.5 118.5 93.5 1 3
143.0 118.0 93.0 1
142.5 117.5 92.5 1 4
142.0 117.0 92.0
141.5 116.5 91.5 3 3
141.0 116.0 91.0 2
140.5 115.5 90.5 1 4
140.0 115.0 1 90.0 2 3
139.5 114.5 89.5
139.0 114.0 89.0 13 7
138.5 113.5 88.5 1
138.0 113.0 88.0 2 5
137.5 112.5 87.5 5
137.0 112.0 87.0 3 2
136.5 111.5 86.5 4 4
136.0 111.0 86.0 1 1
135.5 110.5 85.5 2 8
135.0 110.0 85.0 2
134.5 109.5 84.5 2 4
134.0 109.0 2 1 84.0 3 3
133.5 108.5 83.5 3 8
133.0 108.0 1 83.0 1 4
132.5 107.5 82.5 2
132.0 107.0 82.0 4 13
131.5 106.5 1 81.5 3
131.0 106.0 81.0 3 7
130.5 105.5 80.5 4 4
130.0 105.0 80.0 3 3
129.5 104.5 1 79.5 3 5
129.0 104.0 79.0 1
128.5 103.5 78.5 3 6
128.0 103.0 78.0 2 3
127.5 102.5 77.5 1 4
127.0 102.0 3 77.0 1 6
126.5 101.5 76.5 7
126.0 101.0 1 76.0 6 7
125.5 100.5 75.5 3
American Mathematics Competitions
2005 AMC 12 B Results for Louisiana
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 4 4 50.0 25.0
74.5 2 2 49.5 24.5
74.0 3 2 49.0 24.0 1
73.5 4 6 48.5 1 23.5
73.0 3 5 48.0 3 1 23.0
72.5 3 7 47.5 1 22.5
72.0 2 3 47.0 1 22.0
71.5 4 2 46.5 1 21.5
71.0 4 9 46.0 21.0
70.5 1 6 45.5 20.5
70.0 2 2 45.0 20.0
69.5 3 1 44.5 19.5
69.0 2 6 44.0 19.0
68.5 1 1 43.5 18.5
68.0 1 3 43.0 1 2 18.0
67.5 3 42.5 17.5
67.0 6 42.0 2 1 17.0
66.5 1 5 41.5 16.5
66.0 2 6 41.0 1 16.0
65.5 1 40.5 15.5
65.0 2 2 40.0 15.0
64.5 1 2 39.5 14.5
64.0 2 3 39.0 1 14.0
63.5 2 38.5 13.5
63.0 1 38.0 13.0
62.5 1 1 37.5 12.5
62.0 3 37.0 12.0
61.5 1 36.5 11.5
61.0 1 36.0 3 4 11.0
60.5 1 35.5 10.5
60.0 1 4 35.0 10.0
59.5 1 3 34.5 9.5
59.0 3 2 34.0 9.0
58.5 2 33.5 8.5
58.0 33.0 8.0
57.5 1 32.5 7.5
57.0 1 2 32.0 7.0
56.5 1 31.5 6.5
56.0 1 31.0 6.0
55.5 30.5 5.5
55.0 1 30.0 2 1 5.0
54.5 2 29.5 4.5
54.0 1 2 29.0 4.0
53.5 1 3 28.5 3.5
53.0 28.0 3.0
52.5 27.5 2.5
52.0 27.0 2.0
51.5 1 26.5 1.5
51.0 2 26.0 1.0
50.5 1 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 B Results for Louisiana
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
123.0 1
120.5 1
115.0 1
109.0 1 2
108.0 1
106.5 1
104.5 1
102.0 2 1
101.0 1
99.5 1
98.5 2 1
97.5 2 1
97.0 1
96.5 1
96.0 1 2
95.0 1 7 3
94.0 1
93.5 2 2
93.0 1
92.5 2 3
91.5 2 2 2
91.0 2
90.5 4 1
90.0 1 2 2
89.0 11 9
88.5 1
88.0 4 4
87.5 2 3
87.0 4 1
86.5 1 6 1
86.0 2
85.5 1 5 4
85.0 1 1
84.5 3 4
84.0 3 3 1
83.5 6 5
83.0 3 2
82.5 2
82.0 1 11 6
81.5 2 1
81.0 8 2
80.5 4 4 1
80.0 3 3
79.5 6 3 1
79.0 1
78.5 3 6
78.0 2 3
77.5 3 2
77.0 1 4 3
76.5 3 5
76.0 11 2 1
75.5 2 1
75.0 2 6
74.5 2 2
74.0 4 1
73.5 7 3
73.0 1 6 1 1
72.5 1 6 3
72.0 3 2
71.5 4 2
71.0 1 6 6
70.5 3 4
70.0 3 2
69.5 3 1
69.0 5 4
68.5 3
68.0 3 1
67.5 1 2
67.0 3 3
66.5 4 2
66.0 7 1
65.5 1
65.0 2 2
64.5 1 2
64.0 4 1
63.5 3 1
63.0 1
62.5 2
62.0 1 2
61.5 1
61.0 1
60.5 1
60.0 2 3
59.5 3 1
59.0 2 3
58.5 1 2
57.5 1
57.0 3
56.5 1
56.0 1
55.0 1
54.5 2
54.0 1 2
53.5 3 1
51.5 1
51.0 1 1
50.5 1
48.5 1
48.0 1 3
47.5 1
47.0 1
46.5 1
43.0 1 2
42.0 1 2
41.0 1
39.0 1
36.0 4 3
30.0 3
24.0 1 1
American Mathematics Competitions
2005 AMC 12 B Results for Louisiana
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 8.72* 0.27 0.37 0.27 0.29 0.06 0.02
2 0.12 0.21 0.10 8.92* 0.19 0.46 0.00
3 0.21 0.14 8.74* 0.12 0.31 0.48 0.00
4 0.08 8.57* 0.17 0.10 0.31 0.77 0.00
5 5.57* 0.19 0.83 0.08 0.23 3.08 0.02
6 1.57* 1.14 0.66 0.37 0.39 5.86 0.00
7 0.85 1.24 0.35 1.08* 0.21 6.27 0.00
8 1.20 1.45 3.08* 0.04 1.26 2.94 0.02
9 0.41 6.75* 0.37 0.48 0.50 1.49 0.00
10 0.25 0.83 0.31 2.03 2.17* 4.41 0.00
11 1.26 0.70 0.77 3.83* 0.66 2.75 0.02
12 0.27 0.66 0.89 0.48* 0.27 7.43 0.00
13 0.21 0.48 0.48 0.87* 0.27 7.70 0.00
14 0.66 0.99 0.68 0.29 0.52* 6.85 0.00
15 0.85 0.39 0.58 3.35* 0.64 4.18 0.00
16 0.12 0.43 0.62 0.48* 0.21 8.14 0.00
17 0.29 0.54* 0.58 0.14 0.50 7.95 0.00
18 1.33 0.50 0.37* 0.27 0.19 7.35 0.00
19 0.17 0.29 0.41 0.41 1.18* 7.54 0.00
20 0.23 0.33 2.80* 0.64 1.76 4.24 0.00
21 0.29 0.39 0.79* 0.29 0.17 8.07 0.00
22 0.60 0.75 0.23 0.25 0.19* 7.99 0.00
23 0.25 0.27* 0.25 0.21 0.14 8.88 0.00
24 0.33* 0.27 0.41 0.21 0.35 8.43 0.00
25 0.31* 0.46 0.31 0.27 0.37 8.28 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
