American Mathematics Competitions
2005 AMC 10 A Results for Oklahoma
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 99
Number of unofficial participants: 0
Average score of participants: 76.7
Average score for female students is: 73.7 ( 42 Students)
Average score for male students is: 79.4 ( 54 Students)
Average score for unspecified gender is 68.7 ( 3 Students)
Average score for grade 10 is: 74.1 ( 63 Students)
Average score for grade 9 is: 77.4 ( 30 Students)
Average score for grade 8 and below is: 105.1 ( 5 Students)
Average score with unknown grade: 76.0 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 5
Number of schools returning results 7
Average school winning score 118.93
American Mathematics Competitions
2005 AMC 12 A Results for Oklahoma
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 323
Number of unofficial participants: 8
Average score of participants: 82.7
Average score for female students is: 78.2 ( 132 Students)
Average score for male students is: 86.2 ( 183 Students)
Average score for unspecified gender is 76.2 ( 8 Students)
Average score for grade 12 is: 85.2 ( 158 Students)
Average score for grade 11 is: 81.1 ( 133 Students)
Average score for grade 10 is: 79.4 ( 24 Students)
Average score for grade 9 is: 66.4 ( 5 Students)
Average score for grade 8 and below is: 114.5 ( 1 Student)
Average score with unknown grade: 63.0 ( 2 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 47
Number of schools returning results 10
Average school winning score 108.95
Average school team score 311.95
American Mathematics Competitions
2005 AMC 10 B Results for Oklahoma
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 200
Number of unofficial participants: 0
Average score of participants: 73.9
Average score for female students is: 70.2 ( 94 Students)
Average score for male students is: 76.8 ( 102 Students)
Average score for unspecified gender is 84.5 ( 4 Students)
Average score for grade 10 is: 74.7 ( 118 Students)
Average score for grade 9 is: 71.9 ( 79 Students)
Average score for grade 8 and below is: 87.5 ( 2 Students)
Average score with unknown grade: 97.5 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 9
Average school winning score 102.89
American Mathematics Competitions
2005 AMC 12 B Results for Oklahoma
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 267
Number of unofficial participants: 0
Average score of participants: 82.7
Average score for female students is: 78.9 ( 93 Students)
Average score for male students is: 85.1 ( 167 Students)
Average score for unspecified gender is 74.4 ( 7 Students)
Average score for grade 12 is: 84.1 ( 132 Students)
Average score for grade 11 is: 80.2 ( 120 Students)
Average score for grade 10 is: 86.7 ( 11 Students)
Average score for grade 9 is: 123.0 ( 1 Student)
Average score for grade 8 and below is: 111.0 ( 1 Student)
Average score with unknown grade: 76.0 ( 2 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 30
Number of schools returning results 10
Average school winning score 103.65
Average school team score 279.95
2005 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
370.5 1 1
362.0 1 2
351.0 1 3
344.5 1 4
331.5 2 5
323.5 1 7
317.5 2 8
312.0 1 10
307.0 1 11
305.0 1 12
300.0 1 13
287.0 1 14
283.0 1 15
281.0 1 16
246.5 1 17
231.0 1 18
206.0 1 19
111.0 1 20
2005 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
144.0 2
137.0 1
131.0 1
126.5 2
125.5 1 1
124.0 1
123.0 1 1
118.5 2 1
118.0 1 2
115.0 2
114.5 1
113.5 1
112.5 1 2 1
111.5 2
111.0 1
110.0 5
109.0 1 1 3
108.5 1
108.0 3 1
106.5 1
105.5 2 2 2
104.5 5 4
104.0 1 2 1
103.0 3 3 1 3
102.0 6 5 4
101.5 2 2
101.0 10 1 1 1
100.5 1 2 2
99.5 6 4 1
98.5 12 3 1
97.5 1 2
97.0 2 2 2 1
96.5 1 1
96.0 6 8 1 4
95.5 1 2
95.0 8 9 2
94.5 3 1 2
94.0 3 3 1 1
93.5 3 1
93.0 1 1
92.5 8 8 1 1
92.0 3 1 1
91.5 4 2 2
91.0 2 4 1
90.5 1 4
90.0 4 5 2
89.0 14 11
88.5 1 1 1
88.0 2 3 4
87.5 1 5 1 4
87.0 3 1 1 2
86.5 3 8 2
86.0 1 1
85.5 4 5 1 2
85.0 2 1 3
84.5 1 5 1 1
84.0 4 8 2
83.5 1 1
83.0 10 10 1 2
82.5 1 1 4
82.0 8 6 1
81.5 6 8 2 2
81.0 4 1 1 1
80.5 6 8 2
80.0 4 1
79.5 3 4 2
79.0 3 4 1
78.5 4 4 2 3
78.0 4 4 2 3
77.5 1 1
77.0 11 7 1 2
76.5 1 4 2
76.0 1 3 2
75.5 2 2 1 2
75.0 3 1 1 3
74.5 5 4 5 3
74.0 1 2 1
73.5 2 2 2
73.0 5 1 2
72.5 5 2 2 1
72.0 1 3 1 2
71.5 3 1 2
71.0 3 4 3 3
70.5 2 4 1 1
70.0 1 2 5 2
69.5 4 3 1
69.0 4 1 5
68.5 6 3 4
68.0 2 2 1
67.5 5 1 2
67.0 1 1 3
66.5 2 2 1 1
66.0 2 2 1 3
65.5 2 3
65.0 4 2 1 1
64.5 2 2 1 3
64.0 1 3
63.5 4 1 1 3
63.0 1
62.5 1 1
62.0 3 1 2
61.5 1 1 1
61.0 1 2 2
60.5 3 1
60.0 3 1 1 4
59.5 3 2 1
59.0 2 1 1
58.5 4 2
58.0 4 1
57.5 1 1
57.0 1 2 1
56.5 1 1 2
56.0 1 1 3
55.0 1
54.5 2 1 1 3
54.0 2 1 1
53.5 1 1
53.0 1 2
52.0 1 1 2
51.5 2 2
51.0 1 1
50.5 1 1
50.0 1 2
49.5 2
48.0 2 1 3
46.5 1 1 1
46.0 1 1 2
45.5 1
45.0 2 1
44.0 2
43.0 1 1 1
42.5 1 1
42.0 2 2 1
41.5 1
41.0 1
40.5 1
40.0 1 1
37.0 1
34.5 1
34.0 1
33.5 1
31.5 1
27.0 1
20.5 1
18.0 1
13.5 1
American Mathematics Competitions
2005 AMC 10 A Results for Oklahoma
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 99.0
148.5 123.5 98.5
148.0 123.0 98.0
147.5 122.5 97.5
147.0 122.0 97.0 2
146.5 121.5 96.5 1
146.0 121.0 96.0 1
145.5 120.5 95.5
145.0 120.0 95.0
144.5 119.5 94.5
144.0 2 119.0 94.0 1
143.5 118.5 93.5
143.0 118.0 1 1 93.0
142.5 117.5 92.5 1
142.0 117.0 92.0 1
141.5 116.5 91.5
141.0 116.0 91.0
140.5 115.5 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 1
138.0 113.0 88.0
137.5 112.5 87.5 1
137.0 1 112.0 87.0 1
136.5 111.5 86.5
136.0 111.0 86.0 1
135.5 110.5 85.5 1
135.0 110.0 85.0
134.5 109.5 84.5 1
134.0 109.0 84.0 1 1
133.5 108.5 83.5
133.0 108.0 83.0 1
132.5 107.5 82.5
132.0 107.0 82.0
131.5 106.5 81.5 1 1
131.0 1 106.0 81.0 1
130.5 105.5 80.5
130.0 105.0 80.0 1
129.5 104.5 79.5
129.0 104.0 2 79.0
128.5 103.5 78.5 2
128.0 103.0 1 78.0 1 1
127.5 102.5 77.5 1
127.0 102.0 77.0 1
126.5 101.5 1 1 76.5
126.0 101.0 1 76.0 3
125.5 100.5 75.5 1
American Mathematics Competitions
2005 AMC 10 A Results for Oklahoma
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 50.0 25.0
74.5 1 4 49.5 24.5
74.0 2 49.0 24.0
73.5 48.5 23.5
73.0 48.0 1 23.0
72.5 2 47.5 22.5
72.0 1 47.0 22.0
71.5 46.5 1 21.5
71.0 1 2 46.0 1 21.0
70.5 1 45.5 20.5
70.0 2 2 45.0 1 20.0
69.5 44.5 19.5
69.0 1 44.0 2 19.0
68.5 43.5 18.5
68.0 2 43.0 18.0
67.5 42.5 17.5
67.0 42.0 17.0
66.5 1 41.5 1 16.5
66.0 1 41.0 16.0
65.5 40.5 15.5
65.0 1 40.0 1 15.0
64.5 1 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 1 37.5 12.5
62.0 1 37.0 12.0
61.5 36.5 11.5
61.0 1 1 36.0 11.0
60.5 35.5 10.5
60.0 1 35.0 10.0
59.5 1 1 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 2 32.0 7.0
56.5 31.5 6.5
56.0 1 31.0 6.0
55.5 30.5 5.5
55.0 30.0 5.0
54.5 1 29.5 4.5
54.0 1 29.0 4.0
53.5 1 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 2 26.5 1.5
51.0 1 26.0 1.0
50.5 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 A Results for Oklahoma
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
144.0 2
137.0 1
131.0 1
124.0 1
118.0 1 1
104.0 2
103.0 1
101.5 1 1
101.0 1
99.5 1
97.0 2
96.5 1
96.0 1
94.0 1
93.0 1
92.5 1
92.0 1
88.5 1
87.5 1
87.0 1
86.0 1
85.5 1
84.5 1
84.0 1 1
83.0 1
81.5 2
81.0 1
80.0 1
78.5 2
78.0 2
77.5 1
77.0 1
76.0 2 1
75.5 1
75.0 1
74.5 2 3
74.0 2
72.5 2
72.0 1
71.0 1 1 1
70.5 1
70.0 2 3
69.0 1
68.0 2
66.5 1
66.0 1
65.0 1
64.5 1
63.5 1
62.5 1
62.0 1
61.0 1 1
60.0 1
59.5 2
57.0 1 1
56.0 1
54.5 1
54.0 1
53.5 1
52.0 1
51.5 1 1
51.0 1
48.0 1
46.5 1
46.0 1
45.0 1
44.0 2
43.0 1
41.5 1
40.0 1
American Mathematics Competitions
2005 AMC 10 A Results for Oklahoma
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 0.61 0.10 0.40 8.08* 0.40 0.40 0.00
2 0.30 0.20 6.36* 0.10 1.52 1.52 0.00
3 0.00 9.29* 0.10 0.20 0.00 0.40 0.00
4 0.40 1.82* 2.42 0.61 0.30 4.44 0.00
5 6.36* 0.20 3.13 0.10 0.20 0.00 0.00
6 0.20 4.95* 3.43 0.00 0.10 1.31 0.00
7 1.11 4.14* 0.20 0.20 1.21 3.13 0.00
8 1.11 0.40 5.05* 0.00 0.10 3.33 0.00
9 1.01 5.76* 0.30 0.30 0.51 2.12 0.00
10 2.32* 0.40 0.61 0.30 0.10 6.26 0.00
11 0.51 2.42* 0.20 0.40 0.20 6.26 0.00
12 0.71 1.72* 0.61 0.10 0.51 6.36 0.00
13 1.41 0.51 0.30 0.20 1.21* 6.36 0.00
14 0.40 1.11 0.30 0.81 2.73* 4.65 0.00
15 0.40 0.40 0.81 1.21 1.52* 5.66 0.00
16 0.61 0.51 0.81 2.12* 0.20 5.76 0.00
17 0.20 0.10 0.10 2.63* 0.81 6.16 0.00
18 2.02* 1.82 1.01 3.13 0.10 1.92 0.00
19 0.51 0.81 0.51 4.85* 0.51 2.83 0.00
20 1.21* 0.40 0.61 0.61 0.30 6.87 0.00
21 1.82 0.91* 0.20 0.20 0.91 5.96 0.00
22 1.21 0.10 0.40 2.83* 0.71 4.75 0.00
23 0.20 0.51 1.82* 0.71 1.31 5.45 0.00
24 1.11 1.21* 0.30 0.40 0.00 6.97 0.00
25 0.91 1.41 0.91 0.91* 0.20 5.66 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 Oklahoma
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 5 1
149.0 124.0 99.0
148.5 123.5 98.5 10 2
148.0 123.0 1 98.0
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 5 1
145.5 120.5 95.5 1
145.0 120.0 95.0 7 1
144.5 119.5 94.5 3
144.0 119.0 94.0 2 1
143.5 118.5 1 93.5 3
143.0 118.0 93.0
142.5 117.5 92.5 3 5
142.0 117.0 92.0 3
141.5 116.5 91.5 2 2
141.0 116.0 91.0 2
140.5 115.5 90.5 1
140.0 115.0 90.0 4
139.5 114.5 1 89.5
139.0 114.0 89.0 9 5
138.5 113.5 88.5 1
138.0 113.0 88.0 2
137.5 112.5 1 87.5 1
137.0 112.0 87.0 1 2
136.5 111.5 2 86.5 1 2
136.0 111.0 86.0
135.5 110.5 85.5 3 1
135.0 110.0 4 1 85.0 1 1
134.5 109.5 84.5 1
134.0 109.0 1 84.0 4
133.5 108.5 83.5 1
133.0 108.0 3 83.0 3 7
132.5 107.5 82.5 1
132.0 107.0 82.0 1 7
131.5 106.5 81.5 5 1
131.0 106.0 81.0 4
130.5 105.5 2 80.5 2 4
130.0 105.0 80.0 3 1
129.5 104.5 4 1 79.5 1 2
129.0 104.0 1 79.0 2 1
128.5 103.5 78.5 1 2
128.0 103.0 2 1 78.0 1 3
127.5 102.5 77.5 1
127.0 102.0 3 3 77.0 6 5
126.5 2 101.5 76.5 1
126.0 101.0 9 1 76.0
125.5 1 100.5 1 75.5 2
American Mathematics Competitions
2005 AMC 12 A Results for Oklahoma
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 1 50.0 25.0
74.5 2 3 49.5 24.5
74.0 49.0 24.0
73.5 1 1 48.5 23.5
73.0 2 3 48.0 2 23.0
72.5 2 2 47.5 22.5
72.0 1 47.0 22.0
71.5 3 46.5 1 21.5
71.0 3 46.0 21.0
70.5 2 45.5 20.5
70.0 45.0 20.0
69.5 2 1 44.5 19.5
69.0 2 2 44.0 19.0
68.5 3 3 43.5 18.5
68.0 43.0 18.0
67.5 3 1 42.5 1 17.5
67.0 1 42.0 2 17.0
66.5 1 1 41.5 16.5
66.0 1 1 41.0 16.0
65.5 1 1 40.5 15.5
65.0 2 2 40.0 1 15.0
64.5 1 1 39.5 14.5
64.0 1 39.0 14.0
63.5 2 2 38.5 13.5
63.0 38.0 13.0
62.5 1 37.5 12.5
62.0 3 37.0 12.0
61.5 1 36.5 11.5
61.0 36.0 11.0
60.5 1 2 35.5 10.5
60.0 3 35.0 10.0
59.5 34.5 9.5
59.0 2 34.0 9.0
58.5 2 2 33.5 8.5
58.0 1 2 33.0 8.0
57.5 1 32.5 7.5
57.0 1 32.0 7.0
56.5 1 31.5 1 6.5
56.0 31.0 6.0
55.5 30.5 5.5
55.0 30.0 5.0
54.5 2 29.5 4.5
54.0 2 29.0 4.0
53.5 1 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 1 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 A Results for Oklahoma
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
126.5 1 1
125.5 1
123.0 1
118.5 2
114.5 1
112.5 1
111.5 1 1
110.0 2 3
109.0 1
108.0 2 1
105.5 1 1
104.5 1 4
104.0 1
103.0 3
102.0 2 4
101.0 2 1 7
100.5 1
99.5 1 5
98.5 5 7
97.0 2
96.5 1
96.0 3 3
95.5 1
95.0 6 2
94.5 1 1 1
94.0 1 2
93.5 1 2
92.5 5 3
92.0 1 2
91.5 1 2 1
91.0 1 1
90.5 1
90.0 3 1
89.0 1 1 4 8
88.5 1
88.0 2
87.5 1
87.0 3
86.5 1 2
85.5 2 2
85.0 2
84.5 1
84.0 1 2 1
83.5 1
83.0 4 6
82.5 1
82.0 1 1 6
81.5 2 4
81.0 3 1
80.5 2 1 3
80.0 4
79.5 1 1 1
79.0 2 1
78.5 1 3
78.0 1 1 2
77.5 1
77.0 1 5 5
76.5 1
75.5 1 1
75.0 1 1 1
74.5 1 1 3
73.5 1 1
73.0 1 4
72.5 2 3
72.0 1
71.5 2 1
71.0 3
70.5 1 1
70.0 1
69.5 4
69.0 3 1
68.5 2 1 3
67.5 1 2 1 1
67.0 1
66.5 2
66.0 2
65.5 1 1
65.0 3 1
64.5 2
64.0 1
63.5 1 3
62.5 1
62.0 2 1
61.5 1
60.5 2 1
60.0 1 2
59.0 2
58.5 1 2 1
58.0 3 1
57.5 1
57.0 1
56.5 1
54.5 1 1
54.0 1 1
53.5 1
50.5 1
48.0 1 1
46.5 1
42.5 1
42.0 1 1
40.0 1
31.5 1
American Mathematics Competitions
2005 AMC 12 A Results for Oklahoma
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 0.03 0.15 9.63* 0.12 0.06 0.00
2 0.00 9.57* 0.03 0.31 0.06 0.03 0.00
3 0.15 5.60* 0.93 0.40 0.53 2.38 0.00
4 7.15* 0.19 2.54 0.03 0.03 0.06 0.00
5 0.34 7.65* 1.61 0.09 0.00 0.31 0.00
6 0.25 6.10* 0.19 0.28 0.84 2.35 0.00
7 0.50 0.28 7.83* 0.09 0.00 1.30 0.00
8 0.34 0.37 0.43 2.91* 0.15 5.79 0.00
9 4.43* 0.37 1.08 0.31 0.25 3.56 0.00
10 0.34 4.27* 0.19 0.56 0.06 4.58 0.00
11 0.96 0.31 0.31 0.46 3.99* 3.93 0.03
12 1.05 0.12 0.22 3.68* 1.33 3.59 0.00
13 0.19 0.15 0.22 3.56* 0.46 5.42 0.00
14 0.19 0.40 2.97 1.15* 0.46 4.83 0.00
15 0.25 0.12 1.46* 0.74 0.87 6.56 0.00
16 0.25 0.40 1.05 0.74* 0.40 7.15 0.00
17 1.76* 0.65 1.08 0.25 0.40 5.85 0.00
18 0.22* 0.37 0.50 0.31 0.22 8.39 0.00
19 1.15 1.92* 0.84 0.34 0.46 5.29 0.00
20 0.22 0.09 0.22 0.19 0.31* 8.98 0.00
21 0.28 0.40 0.62* 0.19 0.03 8.48 0.00
22 0.34 0.62* 0.25 0.15 0.15 8.48 0.00
23 0.43 0.65* 0.28 0.15 0.40 8.08 0.00
24 0.09 0.25* 0.03 0.34 0.00 9.29 0.00
25 0.28 0.09 0.15* 0.22 0.09 9.16 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 Oklahoma
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 1
148.0 123.0 98.0
147.5 122.5 97.5 2
147.0 122.0 97.0 1
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 2
144.5 119.5 94.5 1
144.0 119.0 94.0 1
143.5 118.5 93.5
143.0 118.0 93.0 1
142.5 117.5 92.5 1
142.0 117.0 92.0 1
141.5 116.5 91.5 2
141.0 116.0 91.0 1
140.5 115.5 90.5
140.0 115.0 90.0 1
139.5 114.5 89.5
139.0 114.0 89.0
138.5 113.5 88.5 1
138.0 113.0 88.0 3 1
137.5 112.5 1 87.5 3 1
137.0 112.0 87.0 1 1
136.5 111.5 86.5 2
136.0 111.0 86.0 1
135.5 110.5 85.5 2
135.0 110.0 85.0 1 1
134.5 109.5 84.5 1
134.0 109.0 2 1 84.0
133.5 108.5 1 83.5 1
133.0 108.0 83.0 1 1
132.5 107.5 82.5 3 1
132.0 107.0 82.0 1
131.5 106.5 81.5 1 1
131.0 106.0 81.0 1
130.5 105.5 2 80.5 1 1
130.0 105.0 80.0
129.5 104.5 79.5 1 1
129.0 104.0 1 79.0 1
128.5 103.5 78.5 1 2
128.0 103.0 2 1 78.0 1 2
127.5 102.5 77.5
127.0 102.0 2 2 77.0 2
126.5 101.5 1 1 76.5 1 1
126.0 101.0 1 76.0 1 1
125.5 100.5 2 75.5 2
American Mathematics Competitions
2005 AMC 10 B Results for Oklahoma
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 2 50.0 1 1 25.0
74.5 1 2 49.5 2 24.5
74.0 1 49.0 24.0
73.5 2 48.5 23.5
73.0 1 1 48.0 2 1 23.0
72.5 1 47.5 22.5
72.0 1 1 47.0 22.0
71.5 1 1 46.5 1 21.5
71.0 3 46.0 2 21.0
70.5 1 45.5 1 20.5
70.0 2 45.0 20.0
69.5 1 44.5 19.5
69.0 3 2 44.0 19.0
68.5 2 1 43.5 18.5
68.0 1 43.0 1 18.0 1
67.5 1 1 42.5 1 17.5
67.0 1 2 42.0 1 17.0
66.5 1 41.5 16.5
66.0 2 1 41.0 1 16.0
65.5 1 2 40.5 1 15.5
65.0 1 40.0 15.0
64.5 2 1 39.5 14.5
64.0 2 1 39.0 14.0
63.5 2 1 38.5 13.5 1
63.0 1 38.0 13.0
62.5 37.5 12.5
62.0 2 37.0 1 12.0
61.5 1 36.5 11.5
61.0 1 1 36.0 11.0
60.5 1 35.5 10.5
60.0 2 2 35.0 10.0
59.5 1 34.5 9.5
59.0 1 34.0 9.0
58.5 1 1 33.5 8.5
58.0 1 33.0 8.0
57.5 1 32.5 7.5
57.0 1 32.0 7.0
56.5 1 1 31.5 6.5
56.0 2 1 31.0 6.0
55.5 30.5 5.5
55.0 1 30.0 5.0
54.5 3 29.5 4.5
54.0 29.0 4.0
53.5 28.5 3.5
53.0 2 28.0 3.0
52.5 27.5 2.5
52.0 2 27.0 2.0
51.5 1 1 26.5 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 Oklahoma
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
112.5 1
109.0 3
108.5 1
105.5 1 1
104.0 1
103.0 3
102.0 4
101.5 2
101.0 1
100.5 2
98.5 1
97.5 1 1
97.0 1
96.0 4
95.0 1 1
94.5 2
94.0 1
93.0 1
92.5 1
92.0 1
91.5 2
91.0 1
90.0 2
88.5 1
88.0 2 2
87.5 1 3
87.0 2
86.5 1 1
86.0 1
85.5 2
85.0 1 2
84.5 1
83.5 1
83.0 2
82.5 2 2
82.0 1
81.5 2
81.0 1
80.5 2
79.5 2
79.0 1
78.5 3
78.0 2 1
77.0 2
76.5 2
76.0 1 1
75.5 1 1
75.0 2 1
74.5 3
74.0 1
73.5 1 1
73.0 2
72.5 1
72.0 2
71.5 1 1
71.0 1 2
70.5 1
70.0 1 1
69.5 1
69.0 4 1
68.5 3 1
68.0 1
67.5 1 1
67.0 1 2
66.5 1
66.0 2 1
65.5 2 1
65.0 1
64.5 3
64.0 2 1
63.5 1 2
63.0 1
62.0 1 1
61.5 1
61.0 1 1
60.5 1
60.0 2 2
59.5 1
59.0 1
58.5 1 1
58.0 1
57.5 1
57.0 1
56.5 2
56.0 1 2
55.0 1
54.5 1 2
53.0 2
52.0 1 1
51.5 2
51.0 1
50.5 1
50.0 2
49.5 2
48.0 1 2
46.5 1
46.0 2
45.5 1
43.0 1
42.5 1
42.0 1
41.0 1
40.5 1
37.0 1
18.0 1
13.5 1
American Mathematics Competitions
2005 AMC 10 B Results for Oklahoma
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 7.75* 0.40 0.50 0.40 0.60 0.35 0.00
2 0.35 0.45 0.15 8.00* 0.15 0.90 0.00
3 0.00 0.80 2.80 5.00* 0.85 0.55 0.00
4 0.95 0.05 1.00 4.10* 0.40 3.50 0.00
5 0.15 0.05 8.30* 0.25 0.60 0.65 0.00
6 0.25 8.15* 0.20 0.60 0.40 0.40 0.00
7 0.90 1.00* 0.55 0.80 0.35 6.40 0.00
8 5.00* 0.35 1.30 0.10 0.20 3.05 0.00
9 0.35 0.50 2.60 4.15* 0.70 1.70 0.00
10 1.10* 0.95 0.55 0.35 0.30 6.75 0.00
11 0.10 0.40 0.15 1.70 1.60* 6.05 0.00
12 0.30 1.55 0.75 0.25 0.10* 7.05 0.00
13 0.50 0.60 1.25* 1.85 0.30 5.50 0.00
14 0.35 0.20 1.95* 2.05 0.75 4.70 0.00
15 1.45 0.75 0.50 3.90* 0.65 2.75 0.00
16 0.30 1.00 0.55 0.30* 0.10 7.75 0.00
17 0.65 2.60* 0.60 0.30 0.25 5.60 0.00
18 0.60 5.00 0.65 2.00* 0.55 1.20 0.00
19 0.40 4.90* 0.55 0.60 0.20 3.35 0.00
20 0.65 0.50 0.85* 0.30 0.25 7.45 0.00
21 0.10* 0.50 0.25 0.30 0.25 8.60 0.00
22 0.95 0.65 0.40* 0.20 0.15 7.65 0.00
23 2.90 0.40 0.35* 0.30 0.25 5.80 0.00
24 0.35 0.20 0.10 0.50 0.85* 8.00 0.00
25 0.30 0.20 2.55* 0.05 0.15 6.75 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 Oklahoma
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 4
149.0 124.0 99.0
148.5 123.5 98.5 3
148.0 123.0 1 98.0
147.5 122.5 97.5
147.0 122.0 97.0 1 1
146.5 121.5 96.5
146.0 121.0 96.0 5 2
145.5 120.5 95.5 1 1
145.0 120.0 95.0 7 2
144.5 119.5 94.5 1
144.0 119.0 94.0 3
143.5 118.5 1 93.5 1
143.0 118.0 1 93.0
142.5 117.5 92.5 7 1
142.0 117.0 92.0
141.5 116.5 91.5 2
141.0 116.0 91.0 4
140.5 115.5 90.5 2 2
140.0 115.0 2 90.0 4 1
139.5 114.5 89.5
139.0 114.0 89.0 7 4
138.5 113.5 1 88.5
138.0 113.0 88.0 1 2
137.5 112.5 2 87.5 2 3
137.0 112.0 87.0 1
136.5 111.5 86.5 6 2
136.0 111.0 1 86.0
135.5 110.5 85.5 2 3
135.0 110.0 85.0 1
134.5 109.5 84.5 4 1
134.0 109.0 1 84.0 4 4
133.5 108.5 83.5
133.0 108.0 1 83.0 6 4
132.5 107.5 82.5 1
132.0 107.0 82.0 3 3
131.5 106.5 1 81.5 5 3
131.0 106.0 81.0 1
130.5 105.5 1 80.5 6 2
130.0 105.0 80.0
129.5 104.5 3 1 79.5 3 1
129.0 104.0 79.0 3 1
128.5 103.5 78.5 3 1
128.0 103.0 3 78.0 2 2
127.5 102.5 77.5
127.0 102.0 3 2 77.0 3 4
126.5 101.5 76.5 1 2
126.0 101.0 1 76.0 1
125.5 1 100.5 2 75.5 2
American Mathematics Competitions
2005 AMC 12 B Results for Oklahoma
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 50.0 1 25.0
74.5 3 1 49.5 24.5
74.0 1 49.0 24.0
73.5 2 48.5 23.5
73.0 1 48.0 23.0
72.5 1 1 47.5 22.5
72.0 2 1 47.0 22.0
71.5 1 46.5 21.5
71.0 4 46.0 1 21.0
70.5 1 3 45.5 20.5 1
70.0 1 1 45.0 2 20.0
69.5 1 2 44.5 19.5
69.0 44.0 19.0
68.5 1 2 43.5 18.5
68.0 2 43.0 1 18.0
67.5 1 42.5 17.5
67.0 1 42.0 1 1 17.0
66.5 1 41.5 16.5
66.0 1 1 41.0 16.0
65.5 40.5 15.5
65.0 2 40.0 15.0
64.5 1 1 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 1 36.5 11.5
61.0 1 36.0 11.0
60.5 35.5 10.5
60.0 1 35.0 10.0
59.5 2 1 34.5 1 9.5
59.0 1 34.0 1 9.0
58.5 33.5 1 8.5
58.0 33.0 8.0
57.5 32.5 7.5
57.0 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 30.0 5.0
54.5 1 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 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 Oklahoma
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
125.5 1
123.0 1
118.5 1
118.0 1
115.0 2
113.5 1
112.5 1 1
111.0 1
109.0 1
108.0 1
106.5 1
105.5 2
104.5 2 2
103.0 1 2
102.0 5
101.0 1
100.5 2
99.5 3 1
98.5 2 1
97.5 1
97.0 1 1
96.0 1 2 5
95.5 2
95.0 3 6
94.5 1
94.0 3
93.5 1
92.5 1 5 2
91.5 1 1
91.0 2 2
90.5 2 2
90.0 1 1 3
89.0 5 6
88.0 2 1
87.5 1 3 1
87.0 1
86.5 2 1 5
85.5 3 2
85.0 1
84.5 3 2
84.0 2 6
83.0 5 5
82.5 1
82.0 5 1
81.5 1 3 4
81.0 1
80.5 5 3
79.5 1 3
79.0 1 3
78.5 3 1
78.0 1 3
77.0 1 4 2
76.5 1 2 1
76.0 1
75.5 1 1
75.0 1
74.5 1 3
74.0 1
73.5 1 1
73.0 1
72.5 2
72.0 1 2
71.5 1
71.0 2 2
70.5 1 3
70.0 1 1
69.5 2 1
68.5 3
68.0 1 1
67.5 1
67.0 1
66.5 1 1
66.0 1 1
65.0 2
64.5 2
63.5 1
61.5 1
61.0 1
60.0 1
59.5 3
59.0 1
56.5 1
56.0 1
54.5 1
54.0 1
53.0 1
52.0 1
50.0 1
46.0 1
45.0 2
43.0 1
42.0 2
34.5 1
34.0 1
33.5 1
27.0 1
20.5 1
American Mathematics Competitions
2005 AMC 12 B Results for Oklahoma
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 9.33* 0.15 0.30 0.04 0.15 0.04 0.00
2 0.07 0.04 0.11 9.25* 0.19 0.34 0.00
3 0.00 0.11 9.25* 0.04 0.22 0.37 0.00
4 0.07 9.29* 0.15 0.04 0.19 0.26 0.00
5 7.90* 0.11 0.71 0.00 0.07 1.20 0.00
6 2.92* 1.20 0.37 0.30 0.41 4.79 0.00
7 1.20 2.06 0.19 1.91* 0.45 4.19 0.00
8 0.94 1.39 4.94* 0.04 0.94 1.76 0.00
9 0.45 7.34* 0.56 0.34 0.30 1.01 0.00
10 0.30 0.49 0.04 2.25 3.33* 3.60 0.00
11 1.61 0.97 0.52 3.97* 0.52 2.40 0.00
12 0.37 0.45 0.67 0.64* 0.07 7.79 0.00
13 0.11 0.52 0.34 1.50* 0.19 7.34 0.00
14 0.82 0.94 0.56 0.30 1.16* 6.22 0.00
15 0.94 0.26 0.34 5.21* 0.34 2.92 0.00
16 0.07 0.19 0.64 0.30* 0.15 8.65 0.00
17 0.26 0.22* 0.22 0.07 0.97 8.24 0.00
18 1.39 0.41 0.26* 0.22 0.11 7.60 0.00
19 0.15 0.26 0.15 0.26 2.51* 6.67 0.00
20 0.19 0.45 4.72* 0.79 1.20 2.66 0.00
21 0.41 0.30 0.86* 0.45 0.15 7.79 0.04
22 0.45 0.97 0.15 0.15 0.19* 8.09 0.00
23 0.07 0.07* 0.15 0.07 0.07 9.55 0.00
24 0.19* 0.26 0.30 0.30 0.11 8.84 0.00
25 0.07* 0.30 0.07 0.30 0.52 8.73 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column