American Mathematics Competitions
2005 AMC 10 A Results for New Mexico
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 234
Number of unofficial participants: 6
Average score of participants: 70.8
Average score for female students is: 70.0 ( 98 Students)
Average score for male students is: 72.3 ( 122 Students)
Average score for unspecified gender is 63.7 ( 14 Students)
Average score for grade 10 is: 70.8 ( 111 Students)
Average score for grade 9 is: 69.4 ( 104 Students)
Average score for grade 8 and below is: 85.2 ( 13 Students)
Average score with unknown grade: 65.5 ( 6 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 3
Number of schools returning results 7
Average school winning score 104.29
American Mathematics Competitions
2005 AMC 12 A Results for New Mexico
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 209
Number of unofficial participants: 7
Average score of participants: 77.9
Average score for female students is: 73.6 ( 83 Students)
Average score for male students is: 80.2 ( 119 Students)
Average score for unspecified gender is 91.8 ( 7 Students)
Average score for grade 12 is: 80.0 ( 65 Students)
Average score for grade 11 is: 76.0 ( 94 Students)
Average score for grade 10 is: 75.6 ( 38 Students)
Average score for grade 9 is: 92.0 ( 3 Students)
Average score for grade 8 and below is: 109.0 ( 2 Students)
Average score with unknown grade: 83.3 ( 7 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 21
Number of schools returning results 6
Average school winning score 110.42
Average school team score 304.92
American Mathematics Competitions
2005 AMC 10 B Results for New Mexico
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 20
Number of unofficial participants: 0
Average score of participants: 81.8
Average score for female students is: 56.5 ( 8 Students)
Average score for male students is: 98.7 ( 12 Students)
Average score for grade 10 is: 88.3 ( 10 Students)
Average score for grade 9 is: 75.3 ( 10 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 3
Number of schools returning results 3
Average school winning score 123.67
American Mathematics Competitions
2005 AMC 12 B Results for New Mexico
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 111
Number of unofficial participants: 0
Average score of participants: 88.1
Average score for female students is: 86.2 ( 42 Students)
Average score for male students is: 89.7 ( 67 Students)
Average score for unspecified gender is 77.0 ( 2 Students)
Average score for grade 12 is: 86.1 ( 56 Students)
Average score for grade 11 is: 86.5 ( 34 Students)
Average score for grade 10 is: 90.0 ( 14 Students)
Average score for grade 9 is: 106.5 ( 3 Students)
Average score for grade 8 and below is: 109.9 ( 4 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 27
Number of schools returning results 8
Average school winning score 112.81
Average school team score 318.56
2005 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
401.5 1 1
367.0 1 2
348.0 1 3
343.5 1 4
337.5 1 5
334.0 1 6
304.0 1 7
301.0 1 8
296.0 1 9
294.5 1 10
285.0 1 11
276.5 1 12
272.0 1 13
217.5 1 14
2005 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
146.5 1
140.5 1
132.0 1
131.0 1
128.5 1
124.0 1 2
123.0 1
122.0 1 1
121.5 1
119.5 1
118.0 2 1
117.0 1 2 1
116.0 1 1
115.5 1 1
115.0 1 1
114.5 1 1
112.5 2
111.0 1
109.0 1 3 1
108.0 1 1
107.5 1
106.5 1 1 1
105.5 2
105.0 1
104.5 3
104.0 1 1
103.0 1 2
102.0 1 6
101.0 1 2 1
100.5 1 2 1
99.5 2 3 1
98.5 1 2 1
98.0 1
97.5 1
97.0 1 2
96.0 4 3 1
95.5 2 1
95.0 4 2
94.5 1
94.0 3 1 1
93.5 1
92.5 5 3
91.5 2 2 2
91.0 1 2
90.5 1
90.0 5 3
89.0 4 6 3
88.5 1
88.0 2 2 3
87.5 1 2
87.0 2
86.5 4 5 3
85.5 4 2 2
85.0 2 1
84.5 5 3
84.0 3 4 2 1
83.5 3 1 1
83.0 3 3 7
82.0 3 2
81.5 2
81.0 2 1
80.5 1 3 2
80.0 1 1
79.5 3
79.0 1
78.5 3 1
78.0 1 6
77.5 1 2 2
77.0 5 3 4
76.5 1
76.0 8 6
75.5 1 1 1
75.0 7 3
74.5 1 4 2
74.0 3 2
73.5 3 1 3
73.0 3 2
72.5 4 5
72.0 2 1 2
71.5 6 2
71.0 3 2 6
70.5 4 1 6
70.0 2 4
69.5 2 1 1
69.0 5 3
68.5 1 3
68.0 1 5
67.5 4 3
67.0 2 2
66.5 1 4
66.0 3 1
65.5 4 5
65.0 3 1
64.5 1 4
64.0 2 1 5
63.5 2 1
63.0 1 5
62.5 1 1 3
62.0 1 1
61.5 2 2 4
61.0 1 2
60.5 1 7
60.0 1 2 8 1
59.5 1 3
59.0 1 1
58.5 2
58.0 1 1
57.5 3 3
57.0 3
56.5 5 4
55.5 1 1 3
55.0 1 2
54.0 1 1
53.0 1
52.5 2
52.0 1 1
51.5 1 1 1
50.5 1
50.0 1
49.5 3
49.0 1 1
48.5 1
48.0 4 1 2
47.5 1
47.0 1 2
46.5 2
46.0 2
45.0 1
44.5 1
43.5 1 1
43.0 2
42.0 1 1 1 2
40.0 1
39.5 1
36.0 2 1
33.0 1
24.5 1
24.0 1 1
American Mathematics Competitions
2005 AMC 10 A Results for New Mexico
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 1 1 99.0
148.5 123.5 98.5 1
148.0 123.0 98.0 1
147.5 122.5 97.5 1
147.0 122.0 97.0 2
146.5 121.5 96.5
146.0 121.0 96.0 1
145.5 120.5 95.5 1
145.0 120.0 95.0
144.5 119.5 94.5
144.0 119.0 94.0 1
143.5 118.5 93.5
143.0 118.0 93.0
142.5 117.5 92.5
142.0 117.0 92.0
141.5 116.5 91.5 1 1
141.0 116.0 91.0 2
140.5 1 115.5 90.5 1
140.0 115.0 90.0 2 1
139.5 114.5 1 89.5
139.0 114.0 89.0 2 1
138.5 113.5 88.5
138.0 113.0 88.0 1 2
137.5 112.5 87.5
137.0 112.0 87.0
136.5 111.5 86.5 1 2
136.0 111.0 86.0
135.5 110.5 85.5 2
135.0 110.0 85.0 1
134.5 109.5 84.5 1 2
134.0 109.0 84.0 2
133.5 108.5 83.5 1
133.0 108.0 1 83.0 5 2
132.5 107.5 82.5
132.0 107.0 82.0 1 1
131.5 106.5 1 81.5 2
131.0 106.0 81.0 1
130.5 105.5 80.5 2
130.0 105.0 80.0
129.5 104.5 79.5 1 2
129.0 104.0 1 79.0
128.5 103.5 78.5
128.0 103.0 1 1 78.0 3 2
127.5 102.5 77.5 2
127.0 102.0 77.0 3 1
126.5 101.5 76.5
126.0 101.0 1 76.0 3 3
125.5 100.5 1 75.5 1
American Mathematics Competitions
2005 AMC 10 A Results for New Mexico
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 2 50.0 1 25.0
74.5 1 1 49.5 3 24.5 1
74.0 1 1 49.0 1 24.0
73.5 3 48.5 1 23.5
73.0 2 48.0 23.0
72.5 2 2 47.5 1 22.5
72.0 1 1 47.0 2 22.0
71.5 1 1 46.5 2 21.5
71.0 3 3 46.0 1 21.0
70.5 1 4 45.5 20.5
70.0 1 3 45.0 1 20.0
69.5 1 44.5 1 19.5
69.0 1 44.0 19.0
68.5 43.5 1 18.5
68.0 2 3 43.0 2 18.0
67.5 1 1 42.5 17.5
67.0 2 42.0 1 17.0
66.5 2 2 41.5 16.5
66.0 1 41.0 16.0
65.5 2 3 40.5 15.5
65.0 1 40.0 1 15.0
64.5 2 2 39.5 1 14.5
64.0 1 2 39.0 14.0
63.5 38.5 13.5
63.0 1 2 38.0 13.0
62.5 2 37.5 12.5
62.0 1 37.0 12.0
61.5 3 1 36.5 11.5
61.0 1 1 36.0 11.0
60.5 3 4 35.5 10.5
60.0 4 4 35.0 10.0
59.5 2 1 34.5 9.5
59.0 1 34.0 9.0
58.5 1 1 33.5 8.5
58.0 33.0 1 8.0
57.5 2 1 32.5 7.5
57.0 1 2 32.0 7.0
56.5 3 1 31.5 6.5
56.0 31.0 6.0
55.5 1 2 30.5 5.5
55.0 1 30.0 5.0
54.5 29.5 4.5
54.0 1 29.0 4.0
53.5 28.5 3.5
53.0 1 28.0 3.0
52.5 1 1 27.5 2.5
52.0 1 27.0 2.0
51.5 1 26.5 1.5
51.0 26.0 1.0
50.5 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 A Results for New Mexico
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
140.5 1
124.0 1 1
114.5 1
108.0 1
106.5 1
104.0 1
103.0 1 1
101.0 1
100.5 1
99.5 1
98.5 1
98.0 1
97.5 1
97.0 2
96.0 1
95.5 1
94.0 1
91.5 2
91.0 2
90.5 1
90.0 1 2
89.0 1 2
88.0 2 1
86.5 1 2
85.5 2
85.0 1
84.5 1 1 1
84.0 1 1
83.5 1
83.0 1 3 3
82.0 1 1
81.5 2
81.0 1
80.5 2
79.5 1 2
78.0 4 2
77.5 1 1
77.0 1 1 2
76.0 4 2
75.5 1
75.0 2 1
74.5 1 1
74.0 2
73.5 3
73.0 1 1
72.5 2 2 1
72.0 1 1
71.5 2
71.0 1 5
70.5 5 1
70.0 2 2
69.5 1
69.0 1 2
68.0 3 2
67.5 1 2
67.0 2
66.5 3 1
66.0 1
65.5 5
65.0 1
64.5 1 3
64.0 3 2
63.0 1 2 2
62.5 2 1
62.0 1
61.5 3 1
61.0 2
60.5 3 4
60.0 7 1
59.5 1 2
59.0 1
58.5 2
57.5 1 1 1
57.0 2 1
56.5 3 1
55.5 1 2
55.0 1 1
54.0 1
53.0 1
52.5 2
52.0 1
51.5 1
50.0 1
49.5 3
49.0 1
48.5 1
48.0 1
47.5 1
47.0 1 1
46.5 2
46.0 1 1
45.0 1
44.5 1
43.5 1
43.0 1 1
42.0 1
40.0 1
39.5 1
33.0 1
24.5 1
American Mathematics Competitions
2005 AMC 10 A Results for New Mexico
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 0.13 0.21 0.38 8.29* 0.73 0.26 0.00
2 0.34 0.13 4.79* 0.21 1.54 2.99 0.00
3 0.04 9.15* 0.13 0.47 0.00 0.21 0.00
4 0.21 1.50* 1.58 0.60 0.68 5.43 0.00
5 4.53* 0.26 4.96 0.04 0.13 0.09 0.00
6 0.38 3.63* 3.50 0.26 0.09 2.14 0.00
7 0.98 3.59* 0.43 0.64 0.73 3.63 0.00
8 0.90 0.38 3.93* 0.30 0.09 4.40 0.00
9 1.45 4.91* 1.28 0.21 0.17 1.97 0.00
10 1.03* 0.30 0.73 0.38 0.13 7.44 0.00
11 0.26 1.79* 0.43 0.81 0.13 6.58 0.00
12 0.30 1.03* 0.64 0.13 0.68 7.22 0.00
13 1.20 0.38 0.51 0.38 0.81* 6.71 0.00
14 0.68 0.68 0.30 0.47 1.97* 5.90 0.00
15 0.56 0.60 0.56 1.11 0.34* 6.84 0.00
16 0.56 0.34 0.68 1.45* 0.09 6.88 0.00
17 0.13 0.47 0.30 1.88* 0.47 6.75 0.00
18 1.79* 1.97 1.15 2.09 0.56 2.44 0.00
19 0.38 0.68 0.77 3.63* 0.64 3.89 0.00
20 0.47* 0.21 0.47 0.34 0.26 8.25 0.00
21 1.24 0.98* 0.09 0.26 0.64 6.79 0.00
22 0.64 0.38 0.21 1.45* 0.17 7.14 0.00
23 0.13 0.30 0.98* 0.73 0.68 7.18 0.00
24 0.77 0.56* 0.26 0.26 0.04 8.12 0.00
25 0.21 0.77 0.47 0.60* 0.09 7.86 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 New Mexico
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
149.0 124.0 1 99.0
148.5 123.5 98.5 1
148.0 123.0 98.0
147.5 122.5 97.5
147.0 122.0 1 97.0
146.5 121.5 96.5
146.0 121.0 96.0 2 2
145.5 120.5 95.5
145.0 120.0 95.0 4
144.5 119.5 94.5 1
144.0 119.0 94.0 2 1
143.5 118.5 93.5
143.0 118.0 93.0
142.5 117.5 92.5 3 2
142.0 117.0 1 92.0
141.5 116.5 91.5 1
141.0 116.0 1 91.0
140.5 115.5 90.5
140.0 115.0 1 90.0 4 1
139.5 114.5 89.5
139.0 114.0 89.0 4
138.5 113.5 88.5
138.0 113.0 88.0 1 1
137.5 112.5 2 87.5 1
137.0 112.0 87.0 2
136.5 111.5 86.5 3 1
136.0 111.0 86.0
135.5 110.5 85.5 2 2
135.0 110.0 85.0
134.5 109.5 84.5 1 3
134.0 109.0 1 84.0 2 1
133.5 108.5 83.5 1 1
133.0 108.0 83.0 1 2
132.5 107.5 1 82.5
132.0 107.0 82.0 2 1
131.5 106.5 1 81.5
131.0 1 106.0 81.0 1 1
130.5 105.5 2 80.5 1
130.0 105.0 80.0
129.5 104.5 1 2 79.5
129.0 104.0 1 79.0 1
128.5 103.5 78.5 2 1
128.0 103.0 78.0
127.5 102.5 77.5 1
127.0 102.0 1 77.0 3 2
126.5 101.5 76.5 1
126.0 101.0 1 76.0 5 2
125.5 100.5 1 75.5 1
American Mathematics Competitions
2005 AMC 12 A Results for New Mexico
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 5 2 50.0 25.0
74.5 1 49.5 24.5
74.0 2 1 49.0 1 24.0 1
73.5 2 1 48.5 23.5
73.0 1 2 48.0 1 3 23.0
72.5 4 47.5 22.5
72.0 1 47.0 22.0
71.5 3 3 46.5 21.5
71.0 3 46.0 21.0
70.5 2 2 45.5 20.5
70.0 1 1 45.0 20.0
69.5 1 1 44.5 19.5
69.0 3 2 44.0 19.0
68.5 1 43.5 1 18.5
68.0 1 43.0 18.0
67.5 3 1 42.5 17.5
67.0 2 42.0 1 17.0
66.5 1 41.5 16.5
66.0 2 1 41.0 16.0
65.5 3 1 40.5 15.5
65.0 1 2 40.0 15.0
64.5 1 39.5 14.5
64.0 1 1 39.0 14.0
63.5 2 38.5 13.5
63.0 1 38.0 13.0
62.5 1 37.5 12.5
62.0 1 37.0 12.0
61.5 2 36.5 11.5
61.0 1 36.0 2 11.0
60.5 1 35.5 10.5
60.0 1 35.0 10.0
59.5 1 34.5 9.5
59.0 1 34.0 9.0
58.5 33.5 8.5
58.0 1 33.0 8.0
57.5 1 2 32.5 7.5
57.0 32.0 7.0
56.5 2 3 31.5 6.5
56.0 31.0 6.0
55.5 1 30.5 5.5
55.0 1 30.0 5.0
54.5 29.5 4.5
54.0 29.0 4.0
53.5 28.5 3.5
53.0 28.0 3.0
52.5 27.5 2.5
52.0 1 27.0 2.0
51.5 1 26.5 1.5
51.0 26.0 1.0
50.5 1 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 A Results for New Mexico
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
146.5 1
131.0 1
124.0 1
122.0 1
117.0 1
116.0 1
115.0 1
112.5 1 1
109.0 1
107.5 1
106.5 1
105.5 1 1
104.5 1 2
104.0 1
102.0 1
101.0 1
100.5 1
99.5 1 1
98.5 1
96.0 1 2 1
95.0 1 2 1
94.5 1
94.0 1 2
92.5 1 2 2
91.5 1 1
90.0 2 2 1
89.0 1 1 2
88.5 1
88.0 1 1
87.5 1
87.0 1 1
86.5 1 3
85.5 1 3
84.5 3 2
84.0 1 1 1
83.5 1 1 1
83.0 3
82.0 1 2
81.0 2
80.5 1
79.0 1
78.5 2 1
77.5 1
77.0 1 2 2
76.5 1
76.0 5 3
75.5 1
75.0 1 5 1
74.5 1
74.0 2 1
73.5 2 1
73.0 2 1
72.5 3 1
72.0 1 1
71.5 1 2 2 1
71.0 1 2
70.5 2 2
70.0 2
69.5 1 1
69.0 3 1 1
68.5 1
68.0 1
67.5 1 3
67.0 1 1
66.5 1
66.0 2 1
65.5 1 1 2
65.0 2 1
64.5 1
64.0 2
63.5 1 1
63.0 1
62.5 1
62.0 1
61.5 1 1
61.0 1
60.5 1
60.0 1
59.5 1
59.0 1
58.0 1
57.5 1 2
56.5 1 2 2
55.5 1
55.0 1
52.0 1
51.5 1
50.5 1
49.0 1
48.0 1 2 1
43.5 1
42.0 1
36.0 2
24.0 1
American Mathematics Competitions
2005 AMC 12 A Results for New Mexico
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 0.00 0.05 0.24 9.43* 0.05 0.24 0.00
2 0.00 9.71* 0.10 0.10 0.00 0.10 0.00
3 0.43 4.26* 1.00 0.48 0.24 3.59 0.00
4 6.51* 0.33 3.06 0.05 0.00 0.05 0.00
5 0.43 5.79* 1.72 0.19 0.05 1.82 0.00
6 0.53 5.02* 0.33 0.38 0.91 2.82 0.00
7 0.72 0.19 7.03* 0.10 0.00 1.96 0.00
8 0.19 0.33 0.19 2.30* 0.19 6.79 0.00
9 2.78* 0.33 0.53 0.33 0.24 5.79 0.00
10 0.62 2.82* 0.19 0.29 0.29 5.79 0.00
11 0.67 0.24 0.24 0.24 3.68* 4.93 0.00
12 0.57 0.33 0.05 2.73* 1.44 4.88 0.00
13 0.10 0.19 0.43 2.58* 0.43 6.27 0.00
14 0.43 0.53 2.73 1.05* 0.53 4.74 0.00
15 0.10 0.33 1.20* 1.10 0.91 6.36 0.00
16 0.19 0.43 0.48 0.53* 0.38 7.99 0.00
17 1.58* 0.72 1.24 0.24 0.38 5.84 0.00
18 0.43* 0.29 0.24 0.19 0.10 8.76 0.00
19 0.86 1.72* 0.86 0.57 0.62 5.36 0.00
20 0.19 0.10 0.14 0.19 0.29* 9.09 0.00
21 0.33 0.38 0.24* 0.10 0.10 8.85 0.00
22 0.29 0.33* 0.24 0.10 0.19 8.85 0.00
23 0.53 0.33* 0.14 0.24 0.48 8.28 0.00
24 0.00 0.10* 0.19 0.14 0.05 9.52 0.00
25 0.33 0.33 0.14* 0.19 0.05 8.90 0.05
(*) 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 New Mexico
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
148.5 123.5 98.5
148.0 123.0 1 98.0
147.5 122.5 97.5
147.0 122.0 97.0
146.5 121.5 1 96.5
146.0 121.0 96.0
145.5 120.5 95.5
145.0 120.0 95.0
144.5 119.5 1 94.5
144.0 119.0 94.0
143.5 118.5 93.5
143.0 118.0 1 93.0
142.5 117.5 92.5
142.0 117.0 1 92.0
141.5 116.5 91.5
141.0 116.0 91.0
140.5 115.5 1 90.5
140.0 115.0 90.0
139.5 114.5 89.5
139.0 114.0 89.0
138.5 113.5 88.5
138.0 113.0 88.0
137.5 112.5 87.5
137.0 112.0 87.0
136.5 111.5 86.5
136.0 111.0 86.0
135.5 110.5 85.5
135.0 110.0 85.0
134.5 109.5 84.5
134.0 109.0 1 84.0 1
133.5 108.5 83.5
133.0 108.0 83.0
132.5 107.5 82.5
132.0 107.0 82.0
131.5 106.5 81.5
131.0 106.0 81.0
130.5 105.5 80.5
130.0 105.0 1 80.0 1
129.5 104.5 79.5
129.0 104.0 79.0
128.5 1 103.5 78.5
128.0 103.0 78.0
127.5 102.5 77.5
127.0 102.0 77.0
126.5 101.5 76.5
126.0 101.0 76.0
125.5 100.5 75.5
American Mathematics Competitions
2005 AMC 10 B Results for New Mexico
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 50.0 25.0
74.5 49.5 24.5
74.0 49.0 24.0 1
73.5 48.5 23.5
73.0 48.0 1 1 23.0
72.5 47.5 22.5
72.0 47.0 22.0
71.5 46.5 21.5
71.0 46.0 21.0
70.5 45.5 20.5
70.0 45.0 20.0
69.5 44.5 19.5
69.0 44.0 19.0
68.5 43.5 18.5
68.0 43.0 18.0
67.5 42.5 17.5
67.0 42.0 2 17.0
66.5 41.5 16.5
66.0 41.0 16.0
65.5 40.5 15.5
65.0 40.0 15.0
64.5 39.5 14.5
64.0 39.0 14.0
63.5 1 38.5 13.5
63.0 38.0 13.0
62.5 37.5 12.5
62.0 37.0 12.0
61.5 36.5 11.5
61.0 36.0 1 11.0
60.5 35.5 10.5
60.0 1 35.0 10.0
59.5 34.5 9.5
59.0 34.0 9.0
58.5 33.5 8.5
58.0 33.0 8.0
57.5 32.5 7.5
57.0 32.0 7.0
56.5 31.5 6.5
56.0 31.0 6.0
55.5 30.5 5.5
55.0 30.0 5.0
54.5 29.5 4.5
54.0 29.0 4.0
53.5 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 26.0 1.0
50.5 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 B Results for New Mexico
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
128.5 1
123.0 1
121.5 1
119.5 1
118.0 1
117.0 1
115.5 1
109.0 1
105.0 1
84.0 1
80.0 1
63.5 1
60.0 1
51.5 1
48.0 1 1
42.0 2
36.0 1
24.0 1
American Mathematics Competitions
2005 AMC 10 B Results for New Mexico
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 6.00* 0.50 0.50 0.00 3.00 0.00 0.00
2 0.00 2.00 0.00 8.00* 0.00 0.00 0.00
3 0.00 0.00 4.00 5.00* 1.00 0.00 0.00
4 0.00 0.00 2.00 6.50* 0.50 1.00 0.00
5 0.00 0.00 9.00* 0.00 1.00 0.00 0.00
6 0.00 8.50* 0.50 0.50 0.50 0.00 0.00
7 1.50 4.50* 0.50 2.50 0.50 0.50 0.00
8 8.00* 0.00 1.50 0.00 0.00 0.50 0.00
9 0.00 0.00 4.00 4.50* 0.00 1.50 0.00
10 6.00* 0.50 0.50 0.00 0.50 2.50 0.00
11 1.00 0.50 0.00 4.00 4.00* 0.50 0.00
12 0.50 1.50 2.00 0.00 3.00* 3.00 0.00
13 1.50 0.50 3.50* 1.50 2.00 1.00 0.00
14 2.50 0.50 5.00* 1.00 0.50 0.50 0.00
15 1.00 0.50 0.50 6.50* 0.00 1.50 0.00
16 0.50 1.50 1.00 2.00* 1.50 3.50 0.00
17 2.50 5.00* 0.50 0.00 0.50 1.50 0.00
18 1.00 3.50 1.00 2.50* 1.00 1.00 0.00
19 0.00 5.50* 1.00 1.50 0.50 1.50 0.00
20 1.50 0.50 3.50* 0.50 1.00 3.00 0.00
21 1.00* 2.50 1.00 0.00 0.00 5.50 0.00
22 1.00 1.50 2.50* 0.00 0.00 5.00 0.00
23 1.00 0.50 2.50* 3.00 0.00 3.00 0.00
24 0.50 0.00 3.00 0.00 3.00* 3.50 0.00
25 0.00 0.50 2.50* 0.00 3.00 4.00 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 New Mexico
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 3
149.0 124.0 99.0
148.5 123.5 98.5 1 1
148.0 123.0 98.0
147.5 122.5 97.5
147.0 122.0 1 97.0 1
146.5 121.5 96.5
146.0 121.0 96.0 1 2
145.5 120.5 95.5 1 1
145.0 120.0 95.0 2
144.5 119.5 94.5
144.0 119.0 94.0 1
143.5 118.5 93.5 1
143.0 118.0 2 93.0
142.5 117.5 92.5 3
142.0 117.0 2 92.0
141.5 116.5 91.5 2
141.0 116.0 1 91.0 1
140.5 115.5 1 90.5
140.0 115.0 1 90.0
139.5 114.5 1 89.5
139.0 114.0 89.0 3 3
138.5 113.5 88.5
138.0 113.0 88.0 2
137.5 112.5 87.5 2
137.0 112.0 87.0
136.5 111.5 86.5 2 3
136.0 111.0 1 86.0
135.5 110.5 85.5 2
135.0 110.0 85.0 1 1
134.5 109.5 84.5
134.0 109.0 3 84.0 3 1
133.5 108.5 83.5 1
133.0 108.0 1 83.0 2
132.5 107.5 82.5
132.0 1 107.0 82.0
131.5 106.5 1 81.5
131.0 106.0 81.0
130.5 105.5 80.5 2 1
130.0 105.0 80.0 1
129.5 104.5 79.5
129.0 104.0 79.0
128.5 103.5 78.5 1
128.0 103.0 1 78.0 1
127.5 102.5 77.5 2
127.0 102.0 5 1 77.0 2 1
126.5 101.5 76.5
126.0 101.0 2 76.0
125.5 100.5 1 1 75.5 1
American Mathematics Competitions
2005 AMC 12 B Results for New Mexico
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 50.0 25.0
74.5 1 3 49.5 24.5
74.0 49.0 24.0
73.5 1 48.5 23.5
73.0 48.0 23.0
72.5 47.5 22.5
72.0 1 47.0 1 22.0
71.5 46.5 21.5
71.0 1 46.0 21.0
70.5 1 45.5 20.5
70.0 45.0 20.0
69.5 1 44.5 19.5
69.0 44.0 19.0
68.5 1 2 43.5 18.5
68.0 43.0 18.0
67.5 42.5 17.5
67.0 42.0 1 17.0
66.5 41.5 16.5
66.0 41.0 16.0
65.5 40.5 15.5
65.0 40.0 15.0
64.5 39.5 14.5
64.0 1 39.0 14.0
63.5 38.5 13.5
63.0 38.0 13.0
62.5 1 37.5 12.5
62.0 37.0 12.0
61.5 1 1 36.5 11.5
61.0 36.0 11.0
60.5 35.5 10.5
60.0 1 1 35.0 10.0
59.5 34.5 9.5
59.0 34.0 9.0
58.5 33.5 8.5
58.0 1 33.0 8.0
57.5 32.5 7.5
57.0 32.0 7.0
56.5 31.5 6.5
56.0 31.0 6.0
55.5 1 30.5 5.5
55.0 30.0 5.0
54.5 29.5 4.5
54.0 1 29.0 4.0
53.5 28.5 3.5
53.0 28.0 3.0
52.5 27.5 2.5
52.0 27.0 2.0
51.5 26.5 1.5
51.0 26.0 1.0
50.5 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 B Results for New Mexico
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
132.0 1
122.0 1
118.0 1 1
117.0 2
116.0 1
115.5 1
115.0 1
114.5 1
111.0 1
109.0 1 1 1
108.0 1
106.5 1
103.0 1
102.0 1 2 3
101.0 2
100.5 1 1
99.5 1 2
98.5 2
97.0 1
96.0 2 1
95.5 2
95.0 1 1
94.0 1
93.5 1
92.5 1 1 1
91.5 1 1
91.0 1
89.0 3 1 2
88.0 1 1
87.5 1 1
86.5 1 3 1
85.5 2
85.0 1 1
84.0 2 1 1
83.5 1
83.0 2 1
80.5 3
80.0 1
78.5 1
78.0 1
77.5 2
77.0 1 2
75.5 1
74.5 1 3
73.5 1
72.0 1
71.0 2
70.5 1
69.5 1
68.5 3
64.0 1
62.5 1
61.5 1 1
60.0 2
58.0 1
55.5 1
54.0 1
47.0 1
42.0 1
American Mathematics Competitions
2005 AMC 12 B Results for New Mexico
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 9.37* 0.18 0.45 0.00 0.00 0.00 0.00
2 0.00 0.36 0.00 9.46* 0.00 0.18 0.00
3 0.00 0.00 9.82* 0.09 0.09 0.00 0.00
4 0.09 9.10* 0.09 0.27 0.36 0.09 0.00
5 9.37* 0.00 0.36 0.00 0.00 0.27 0.00
6 4.77* 0.27 0.72 0.09 0.36 3.78 0.00
7 1.35 1.80 0.18 4.23* 0.45 1.98 0.00
8 0.63 1.80 5.86* 0.00 1.17 0.54 0.00
9 0.00 7.21* 0.45 0.45 0.45 1.44 0.00
10 0.18 0.36 0.27 2.70 4.41* 2.07 0.00
11 1.53 1.17 0.36 4.86* 0.27 1.80 0.00
12 0.36 0.63 0.81 1.08* 0.18 6.94 0.00
13 0.45 0.27 0.09 2.70* 0.54 5.95 0.00
14 0.90 0.72 0.99 0.45 2.07* 4.86 0.00
15 0.36 0.18 0.18 6.31* 0.45 2.52 0.00
16 0.36 0.27 1.53 1.44* 0.54 5.86 0.00
17 0.45 0.81* 0.18 0.09 0.45 8.02 0.00
18 0.90 0.36 0.72* 0.99 0.27 6.76 0.00
19 0.18 0.18 0.18 0.27 2.52* 6.67 0.00
20 0.18 0.54 4.41* 0.54 1.08 3.24 0.00
21 0.27 0.18 0.90* 0.45 0.18 8.02 0.00
22 0.09 0.36 0.18 0.27 0.27* 8.83 0.00
23 0.09 0.27* 0.36 0.00 0.18 9.10 0.00
24 0.18* 0.18 0.18 0.45 0.27 8.74 0.00
25 0.27* 0.09 0.18 0.00 0.54 8.92 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column