American Mathematics Competitions
2005 AMC 10 A Results for Alberta
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 19
Number of unofficial participants: 0
Average score of participants: 72.4
Average score for female students is: 61.2 ( 3 Students)
Average score for male students is: 73.8 ( 15 Students)
Average score for unspecified gender is 86.5 ( 1 Student)
Average score for grade 10 is: 63.6 ( 11 Students)
Average score for grade 9 is: 82.1 ( 7 Students)
Average score for grade 8 and below is: 102.0 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 1
Number of schools returning results 2
Average school winning score 120.00
American Mathematics Competitions
2005 AMC 12 A Results for Alberta
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 19
Number of unofficial participants: 0
Average score of participants: 79.9
Average score for female students is: 70.1 ( 6 Students)
Average score for male students is: 84.5 ( 12 Students)
Average score for unspecified gender is 84.5 ( 1 Student)
Average score for grade 12 is: 77.9 ( 13 Students)
Average score for grade 11 is: 84.3 ( 5 Students)
Average score with unknown grade: 84.5 ( 1 Student)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 3
Number of schools returning results 2
Average school winning score 119.00
Average school team score 287.75
American Mathematics Competitions
2005 AMC 10 B Results for Alberta
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 28
Number of unofficial participants: 0
Average score of participants: 99.1
Average score for female students is: 94.0 ( 7 Students)
Average score for male students is: 103.0 ( 15 Students)
Average score for unspecified gender is 95.3 ( 6 Students)
Average score for grade 10 is: 99.4 ( 27 Students)
Average score with unknown grade: 91.0 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 4
Number of schools returning results 2
Average school winning score 132.50
American Mathematics Competitions
2005 AMC 12 B Results for Alberta
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 54
Number of unofficial participants: 0
Average score of participants: 97.9
Average score for female students is: 95.0 ( 22 Students)
Average score for male students is: 100.0 ( 31 Students)
Average score for unspecified gender is 96.0 ( 1 Student)
Average score for grade 12 is: 97.7 ( 28 Students)
Average score for grade 11 is: 96.8 ( 20 Students)
Average score for grade 10 is: 104.3 ( 2 Students)
Average score with unknown grade: 101.8 ( 4 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 22
Number of schools returning results 4
Average school winning score 122.63
Average school team score 290.63
2005 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
384.0 1 1
353.5 1 2
316.5 1 3
307.0 1 4
259.0 1 5
118.0 1 6
2005 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
139.5 1
136.0 1
130.0 1
127.5 1
125.5 1
122.0 1
120.5 1 2
119.5 1
118.0 3
117.0 1
116.0 1
115.0 1
114.5 1
113.5 1
112.5 1
111.0 1
110.0 1
109.0 4
108.5 1
107.5 1
106.5 1 1
106.0 1
105.5 1
103.0 1
102.0 1 2 1
101.5 1
101.0 1
100.5 2
99.5 3
99.0 1
98.5 1 1
98.0 1
97.5 1
97.0 2 1
96.0 3
95.5 1
95.0 1
94.5 2
94.0 1
93.5 1
92.5 1 3 1
92.0 2
91.0 1
90.0 1
89.0 1 1
88.5 1
88.0 1
86.5 1 1
85.5 1 1
85.0 2
84.5 1
84.0 1
82.5 2
82.0 1
81.0 1 1
80.5 1
78.5 1
78.0 1
77.5 1
77.0 1
76.5 1
76.0 1
75.0 2
74.0 1
71.5 2 1
70.5 1 1
70.0 1
69.0 1 1
67.5 1
67.0 1
66.0 1
65.5 1
64.0 1
63.0 1
62.0 2
57.5 1
56.5 1 1
54.5 1
53.5 1
42.5 1
32.5 1
30.5 1
American Mathematics Competitions
2005 AMC 10 A Results for Alberta
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 98.0
147.5 122.5 97.5
147.0 122.0 97.0
146.5 121.5 96.5
146.0 121.0 96.0
145.5 120.5 1 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 93.0
142.5 117.5 92.5
142.0 117.0 92.0
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
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 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 1
131.5 106.5 81.5
131.0 106.0 81.0
130.5 105.5 80.5
130.0 105.0 80.0
129.5 104.5 79.5
129.0 104.0 79.0
128.5 103.5 78.5
128.0 103.0 78.0
127.5 102.5 77.5 1
127.0 102.0 1 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 A Results for Alberta
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
73.5 48.5 23.5
73.0 48.0 23.0
72.5 47.5 22.5
72.0 47.0 22.0
71.5 1 1 46.5 21.5
71.0 46.0 21.0
70.5 45.5 20.5
70.0 1 45.0 20.0
69.5 44.5 19.5
69.0 1 44.0 19.0
68.5 43.5 18.5
68.0 43.0 18.0
67.5 42.5 17.5
67.0 1 42.0 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 38.5 13.5
63.0 38.0 13.0
62.5 37.5 12.5
62.0 2 37.0 12.0
61.5 36.5 11.5
61.0 36.0 11.0
60.5 35.5 10.5
60.0 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 1 32.5 1 7.5
57.0 32.0 7.0
56.5 1 31.5 6.5
56.0 31.0 6.0
55.5 30.5 1 5.5
55.0 30.0 5.0
54.5 1 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 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 Alberta
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
120.5 1
119.5 1
102.0 1
86.5 1
84.0 1
82.0 1
77.5 1
71.5 1 1
70.0 1
69.0 1
67.0 1
62.0 2
57.5 1
56.5 1
54.5 1
32.5 1
30.5 1
American Mathematics Competitions
2005 AMC 10 A Results for Alberta
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 0.00 0.00 8.42* 0.53 1.05 0.00
2 0.00 0.00 3.68* 0.53 1.58 4.21 0.00
3 0.53 7.37* 0.53 0.53 0.53 0.53 0.00
4 0.53 1.58* 3.16 0.00 0.53 4.21 0.00
5 5.79* 1.58 1.58 0.53 0.00 0.53 0.00
6 0.53 3.68* 3.68 0.53 0.00 1.58 0.00
7 1.58 5.26* 0.00 0.53 0.00 2.63 0.00
8 1.05 0.00 2.11* 0.00 0.00 6.84 0.00
9 0.53 3.16* 0.53 0.00 0.00 5.79 0.00
10 1.58* 0.00 0.53 1.58 0.00 6.32 0.00
11 0.00 2.11* 0.53 0.53 0.00 6.84 0.00
12 0.53 1.05* 1.05 0.00 0.53 6.84 0.00
13 1.05 0.00 0.00 0.53 2.11* 6.32 0.00
14 0.00 0.53 0.53 0.00 2.63* 6.32 0.00
15 0.00 0.53 2.11 1.05 0.53* 5.79 0.00
16 0.00 0.53 0.00 2.63* 0.00 6.84 0.00
17 0.00 0.00 0.00 1.05* 0.53 8.42 0.00
18 1.05* 1.05 0.53 2.11 0.53 4.74 0.00
19 0.00 0.53 0.00 2.11* 1.05 6.32 0.00
20 0.53* 0.53 0.00 1.05 0.00 7.89 0.00
21 1.05 0.00* 0.00 0.00 0.53 8.42 0.00
22 0.53 0.00 0.00 3.16* 0.00 6.32 0.00
23 0.00 0.53 0.53* 0.53 0.53 7.89 0.00
24 0.00 0.00* 0.53 0.53 0.00 8.95 0.00
25 0.00 1.05 0.53 0.53* 0.00 7.89 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 Alberta
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 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
145.5 120.5 95.5
145.0 120.0 95.0
144.5 119.5 94.5
144.0 119.0 94.0
143.5 118.5 93.5
143.0 118.0 93.0
142.5 117.5 92.5 1
142.0 117.0 92.0
141.5 116.5 91.5
141.0 116.0 1 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 1
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 1
135.0 110.0 85.0
134.5 109.5 84.5
134.0 109.0 84.0
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 1
130.5 105.5 80.5
130.0 105.0 80.0
129.5 104.5 79.5
129.0 104.0 79.0
128.5 103.5 78.5 1
128.0 103.0 78.0
127.5 102.5 77.5
127.0 102.0 1 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 12 A Results for Alberta
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 49.5 24.5
74.0 1 49.0 24.0
73.5 48.5 23.5
73.0 48.0 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 1 45.5 20.5
70.0 45.0 20.0
69.5 44.5 19.5
69.0 1 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 17.0
66.5 41.5 16.5
66.0 1 41.0 16.0
65.5 1 40.5 15.5
65.0 40.0 15.0
64.5 39.5 14.5
64.0 39.0 14.0
63.5 38.5 13.5
63.0 1 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 11.0
60.5 35.5 10.5
60.0 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 1 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 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 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 A Results for Alberta
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
122.0 1
116.0 1
102.0 1
92.5 1
89.0 1
85.5 1
84.5 1
81.0 1
78.5 1
75.0 2
74.0 1
70.5 1
69.0 1
66.0 1
65.5 1
63.0 1
56.5 1
53.5 1
American Mathematics Competitions
2005 AMC 12 A Results for Alberta
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 0.00 0.00 8.42* 1.05 0.53 0.00
2 0.00 8.95* 0.00 1.05 0.00 0.00 0.00
3 1.05 3.16* 0.53 1.05 0.53 3.68 0.00
4 8.42* 0.53 0.53 0.00 0.00 0.53 0.00
5 0.00 9.47* 0.53 0.00 0.00 0.00 0.00
6 0.00 4.21* 1.58 0.53 0.00 3.68 0.00
7 1.05 0.00 5.26* 0.00 0.00 3.68 0.00
8 0.00 0.00 0.53 3.16* 0.00 6.32 0.00
9 2.11* 0.00 1.05 0.53 0.00 6.32 0.00
10 0.00 2.11* 0.00 0.53 0.00 7.37 0.00
11 1.05 0.00 0.00 0.00 3.68* 5.26 0.00
12 0.53 0.53 0.00 2.63* 1.05 5.26 0.00
13 0.00 0.00 0.00 3.16* 0.53 6.32 0.00
14 0.00 1.05 2.11 0.53* 0.00 6.32 0.00
15 0.00 0.53 1.05* 0.00 0.00 8.42 0.00
16 0.00 0.00 0.53 0.53* 0.53 8.42 0.00
17 1.05* 0.00 0.53 1.05 0.00 7.37 0.00
18 0.00* 0.00 0.00 0.00 0.00 10.00 0.00
19 1.05 0.53* 1.58 0.53 0.53 5.79 0.00
20 0.00 0.00 0.00 0.00 0.00* 10.00 0.00
21 0.53 0.00 0.53* 0.53 0.00 8.42 0.00
22 0.00 1.05* 0.00 0.53 0.00 8.42 0.00
23 0.00 0.53* 0.00 0.00 0.53 8.95 0.00
24 0.00 0.00* 0.00 0.53 0.00 9.47 0.00
25 0.00 0.00 0.00* 0.00 0.00 10.00 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 10 B Results for Alberta
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
147.5 122.5 97.5 1
147.0 122.0 97.0 1
146.5 121.5 96.5
146.0 121.0 96.0
145.5 120.5 1 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 1
143.0 118.0 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 1
140.5 115.5 90.5
140.0 115.0 1 90.0
139.5 1 114.5 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 1 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 1 85.0
134.5 109.5 84.5
134.0 109.0 84.0
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 1 81.5
131.0 106.0 1 81.0
130.5 105.5 80.5
130.0 105.0 80.0
129.5 104.5 79.5
129.0 104.0 79.0
128.5 103.5 78.5
128.0 103.0 1 78.0 1
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 1 100.5 75.5
American Mathematics Competitions
2005 AMC 10 B Results for Alberta
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
73.5 48.5 23.5
73.0 48.0 23.0
72.5 47.5 22.5
72.0 47.0 22.0
71.5 1 46.5 21.5
71.0 46.0 21.0
70.5 1 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 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 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 11.0
60.5 35.5 10.5
60.0 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 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 Alberta
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
139.5 1
125.5 1
120.5 2
115.0 1
112.5 1
111.0 1
110.0 1
108.5 1
106.5 1
106.0 1
103.0 1
99.0 1
98.5 1
97.5 1
97.0 1
95.0 1
93.5 1
92.5 1
92.0 2
91.0 1
88.5 1
78.0 1
76.0 1
71.5 1
70.5 1
64.0 1
American Mathematics Competitions
2005 AMC 10 B Results for Alberta
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 9.29* 0.00 0.36 0.00 0.00 0.36 0.00
2 0.71 0.00 0.00 8.93* 0.00 0.36 0.00
3 0.00 0.71 0.36 8.21* 0.36 0.36 0.00
4 0.36 0.00 0.36 7.14* 0.00 2.14 0.00
5 0.00 0.00 9.64* 0.00 0.36 0.00 0.00
6 0.00 8.93* 0.36 0.00 0.36 0.36 0.00
7 0.71 5.36* 0.36 0.00 0.71 2.86 0.00
8 8.93* 0.00 0.00 0.36 0.00 0.71 0.00
9 0.00 0.71 0.36 7.86* 0.00 1.07 0.00
10 6.43* 0.71 0.36 0.00 0.36 2.14 0.00
11 0.00 0.00 0.36 0.71 5.36* 3.57 0.00
12 0.36 0.00 1.43 0.00 1.43* 6.79 0.00
13 0.36 0.36 3.93* 1.43 0.00 3.93 0.00
14 0.00 0.36 4.64* 0.71 0.00 4.29 0.00
15 0.71 0.00 1.43 5.00* 0.00 2.86 0.00
16 0.36 0.00 1.07 1.43* 0.00 7.14 0.00
17 0.36 5.36* 0.00 0.00 0.00 4.29 0.00
18 1.79 2.50 1.07 2.50* 0.00 2.14 0.00
19 0.36 6.79* 0.00 0.00 0.36 2.50 0.00
20 0.00 0.00 1.43* 0.00 0.00 8.57 0.00
21 0.00* 0.00 0.00 0.71 0.00 9.29 0.00
22 0.36 1.79 0.71* 0.00 0.36 6.79 0.00
23 0.36 0.00 2.14* 0.36 0.00 7.14 0.00
24 0.00 0.36 0.36 0.00 1.79* 7.50 0.00
25 0.36 0.36 3.57* 0.00 0.71 5.00 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 Alberta
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 99.0
148.5 123.5 98.5 1
148.0 123.0 98.0 1
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 1 1
145.5 120.5 95.5 1
145.0 120.0 95.0
144.5 119.5 94.5 1 1
144.0 119.0 94.0 1
143.5 118.5 93.5
143.0 118.0 2 1 93.0
142.5 117.5 92.5 2 1
142.0 117.0 1 92.0
141.5 116.5 91.5
141.0 116.0 91.0
140.5 115.5 90.5
140.0 115.0 90.0 1
139.5 114.5 1 89.5
139.0 114.0 89.0 1
138.5 113.5 1 88.5
138.0 113.0 88.0 1
137.5 112.5 87.5
137.0 112.0 87.0
136.5 111.5 86.5 1
136.0 1 111.0 86.0
135.5 110.5 85.5 1
135.0 110.0 85.0 2
134.5 109.5 84.5
134.0 109.0 2 2 84.0
133.5 108.5 83.5
133.0 108.0 83.0
132.5 107.5 1 82.5 1 1
132.0 107.0 82.0
131.5 106.5 1 81.5
131.0 106.0 81.0 1
130.5 105.5 1 80.5 1
130.0 1 105.0 80.0
129.5 104.5 79.5
129.0 104.0 79.0
128.5 103.5 78.5
128.0 103.0 78.0
127.5 1 102.5 77.5
127.0 102.0 1 1 77.0 1
126.5 101.5 1 76.5 1
126.0 101.0 1 76.0
125.5 100.5 2 75.5
American Mathematics Competitions
2005 AMC 12 B Results for Alberta
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
73.5 48.5 23.5
73.0 48.0 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 1 42.5 1 17.5
67.0 42.0 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 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 11.0
60.5 35.5 10.5
60.0 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 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 Alberta
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
136.0 1
130.0 1
127.5 1
118.0 2 1
117.0 1
114.5 1
113.5 1
109.0 1 3
107.5 1
106.5 1
105.5 1
102.0 2
101.5 1
101.0 1
100.5 1 1
99.5 2 1
98.5 1
98.0 1
97.0 1 1
96.0 1 1 1
95.5 1
94.5 1 1
94.0 1
92.5 2 1
90.0 1
89.0 1
88.0 1
86.5 1
85.5 1
85.0 2
82.5 1 1
81.0 1
80.5 1
77.0 1
76.5 1
67.5 1
42.5 1
American Mathematics Competitions
2005 AMC 12 B Results for Alberta
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 9.81* 0.00 0.19 0.00 0.00 0.00 0.00
2 0.00 0.00 0.00 9.81* 0.19 0.00 0.00
3 0.00 0.00 9.63* 0.00 0.19 0.19 0.00
4 0.00 9.63* 0.00 0.00 0.19 0.19 0.00
5 9.81* 0.00 0.00 0.00 0.00 0.19 0.00
6 7.22* 0.19 0.37 0.56 0.19 1.48 0.00
7 0.56 1.11 0.00 6.11* 0.56 1.67 0.00
8 0.19 1.30 6.85* 0.00 0.56 1.11 0.00
9 0.00 8.33* 0.93 0.19 0.19 0.37 0.00
10 0.00 0.37 0.19 0.19 7.41* 1.85 0.00
11 0.93 2.78 0.37 5.00* 0.00 0.93 0.00
12 0.19 0.00 0.56 3.52* 0.00 5.74 0.00
13 0.19 0.19 0.19 6.85* 0.00 2.59 0.00
14 0.93 1.30 1.30 0.19 2.04* 4.26 0.00
15 0.00 0.00 0.00 5.56* 0.37 4.07 0.00
16 0.19 0.00 1.48 0.74* 0.37 7.22 0.00
17 1.48 1.67* 0.37 0.19 0.56 5.74 0.00
18 0.37 0.00 1.67* 0.93 0.93 6.11 0.00
19 0.19 0.37 0.00 0.00 2.96* 6.48 0.00
20 0.00 0.00 5.19* 0.37 1.11 3.33 0.00
21 0.19 0.19 1.11* 0.37 0.19 7.96 0.00
22 0.19 0.00 0.19 0.19 0.00* 9.44 0.00
23 0.00 0.93* 0.37 0.19 0.00 8.52 0.00
24 0.19* 0.00 0.19 0.00 0.00 9.63 0.00
25 0.19* 0.19 0.37 0.00 0.00 9.26 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column