American Mathematics Competitions
2009 AMC 10 A Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 386
Number of unofficial participants: 0
Average score of participants: 59.3
Average score for female students is: 57.8 ( 153 Students)
Average score for male students is: 61.6 ( 171 Students)
Average score for unspecified gender is 56.3 ( 62 Students)
Average score for grade 10 is: 62.7 ( 258 Students)
Average score for grade 9 is: 52.5 ( 88 Students)
Average score for grade 8 and below is: 52.0 ( 11 Students)
Average score with unknown grade: 52.1 ( 29 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 1
Number of schools returning results 14
Average school winning score 94.82
American Mathematics Competitions
2009 AMC 12 A Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 508
Number of unofficial participants: 0
Average score of participants: 59.8
Average score for female students is: 56.9 ( 186 Students)
Average score for male students is: 63.0 ( 266 Students)
Average score for unspecified gender is 53.9 ( 56 Students)
Average score for grade 12 is: 61.1 ( 200 Students)
Average score for grade 11 is: 59.4 ( 266 Students)
Average score for grade 10 is: 67.4 ( 13 Students)
Average score for grade 9 is: 59.3 ( 2 Students)
Average score with unknown grade: 50.7 ( 27 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 3
Number of schools returning results 18
Average school winning score 84.83
Average school team score 224.33
American Mathematics Competitions
2009 AMC 10 B Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 58
Number of unofficial participants: 0
Average score of participants: 57.4
Average score for female students is: 51.5 ( 19 Students)
Average score for male students is: 61.2 ( 27 Students)
Average score for unspecified gender is 58.1 ( 12 Students)
Average score for grade 10 is: 54.1 ( 11 Students)
Average score for grade 9 is: 55.3 ( 40 Students)
Average score for grade 8 and below is: 84.0 ( 5 Students)
Average score with unknown grade: 49.5 ( 2 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 2
Average school winning score 97.50
American Mathematics Competitions
2009 AMC 12 B Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 40
Number of unofficial participants: 0
Average score of participants: 58.0
Average score for female students is: 52.3 ( 8 Students)
Average score for male students is: 59.0 ( 31 Students)
Average score for unspecified gender is 70.5 ( 1 Student)
Average score for grade 12 is: 62.9 ( 11 Students)
Average score for grade 11 is: 51.3 ( 25 Students)
Average score for grade 10 is: 91.5 ( 3 Students)
Average score with unknown grade: 70.5 ( 1 Student)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 2
Number of schools returning results 3
Average school winning score 98.00
Average school team score 252.00
2009 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
282.0 1 1
279.0 1 2
276.0 1 3
268.5 1 4
264.0 1 5
261.0 1 6
259.5 1 7
258.0 1 8
246.0 1 9
243.0 1 10
241.5 1 11
238.5 1 12
234.0 1 13
229.5 1 14
228.0 1 15
210.0 1 16
196.5 1 17
190.5 1 18
174.0 1 19
162.0 1 20
2009 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
136.5 1
115.5 1
114.0 1 1 1
106.5 1 1
105.0 1 1
103.5 1 1
102.0 1
100.5 3
99.0 3
96.0 1 1 1
93.0 1 2
91.5 1 3
90.0 2 5
88.5 5 2
87.0 2 1 1 1
85.5 6 6
84.0 7 3 2
82.5 3 8 1
81.0 11 6
79.5 9 9 1
78.0 10 6 1
76.5 12 9 1
75.0 8 3 1
73.5 12 1 5
72.0 23 1 13 1
70.5 15 1 9 1
69.0 14 2 7
67.5 19 1 9 2
66.0 24 2 14
64.5 24 10 4
63.0 19 1 9 1
61.5 17 1 10 1
60.0 24 1 12 1
58.5 19 2 16
57.0 17 1 10 2
55.5 18 1 9 5
54.0 13 1 12 4
52.5 14 1 10 1
51.0 12 4 19 5
49.5 11 1 16 2
48.0 19 1 17 2
46.5 16 3 18 3
45.0 14 1 12 1
43.5 15 4 7 2
42.0 12 2 8 2
40.5 14 12 2
39.0 5 2 12
37.5 9 9 1
36.0 7 10 1
34.5 3 7
33.0 1 2 2
31.5 2 1
30.0 7 2 1
28.5 1 2
27.0 1
25.5 1 1
24.0 3 1
22.5 2
19.5 1 1
American Mathematics Competitions
2009 AMC 10 A Results for Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
136.5 1 1
114.0 1 1
105.0 1
103.5 1 1
102.0 1 1
100.5 2 1 3
99.0 2 1 3
96.0 1 1
93.0 1 2
91.5 3 1 2
90.0 4 1 5
88.5 2 2
87.0 1 1
85.5 4 1 5 1
84.0 2 1 1 1
82.5 6 2 2 6
81.0 4 2 6
79.5 1 6 8 1
78.0 3 2 2 4
76.5 3 5 8 1
75.0 1 1 2
73.5 2 2 2 3
72.0 6 7 1 12
70.5 4 3 2 7
69.0 3 3 2 5
67.5 3 3 1 7 1
66.0 7 4 1 3 9 1
64.5 3 5 1 7 2
63.0 4 5 9
61.5 5 5 2 8
60.0 9 2 1 11
58.5 7 4 2 11 3
57.0 6 4 2 8
55.5 5 4 1 2 6
54.0 3 7 5 6 1
52.5 5 2 1 4 5
51.0 10 7 3 6 9 1
49.5 5 10 6 10
48.0 9 5 1 6 9 1
46.5 6 6 2 4 9 3
45.0 4 6 3 8 1
43.5 2 4 4 3
42.0 3 4 3 5
40.5 4 6 1 8 3
39.0 5 2 1 2 5 4
37.5 4 4 3 5 1
36.0 3 6 4 6
34.5 3 2 3 2 2
33.0 1 2
31.5 1 1
30.0 2 1 1
28.5 1 1 1 1
27.0 1 1
25.5 1
American Mathematics Competitions
2009 AMC 10 A Results for Idaho
Analysis
Table of Item Difficulty for the 2009
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.78 0.26 0.52 12.69 83.68* 2.07 0.00
2 90.67* 0.78 1.04 1.30 1.04 5.18 0.00
3 3.37 11.66 57.25* 8.55 4.15 15.03 0.00
4 22.28* 6.99 4.15 4.92 13.73 47.93 0.00
5 11.92 5.70 4.15 2.07 40.93* 35.23 0.00
6 50.26* 2.59 8.55 4.40 1.55 32.64 0.00
7 4.92 4.92 17.10* 2.85 41.97 28.24 0.00
8 12.44 62.69* 4.40 1.55 1.30 17.62 0.00
9 7.77 12.18* 7.51 5.18 0.26 67.10 0.00
10 2.85 21.50* 4.66 8.29 2.59 60.10 0.00
11 2.59 1.55 3.63 46.63* 0.52 45.08 0.00
12 3.11 8.03 21.24* 5.96 5.44 56.22 0.00
13 21.76 4.66 3.11 13.73 8.55* 48.19 0.00
14 27.46* 1.04 4.15 3.63 12.44 51.30 0.00
15 2.07 3.11 4.40 6.22 32.90* 51.30 0.00
16 22.02 4.66 1.55 5.70* 2.33 63.73 0.00
17 4.40 7.77 3.89* 2.33 2.85 78.76 0.00
18 19.17 7.77 4.92 12.18* 8.03 47.93 0.00
19 4.15 8.81* 3.63 6.74 1.55 75.13 0.00
20 8.29 7.51 11.66 22.28* 1.55 48.70 0.00
21 2.33 1.81 8.55* 3.11 1.55 82.64 0.00
22 6.74 4.15 27.98 4.92* 3.11 53.11 0.00
23 1.81 3.11 3.63 3.11 6.99* 81.35 0.00
24 5.18 11.92 3.37* 6.48 7.51 65.54 0.00
25 4.92 4.66* 3.63 1.30 2.33 83.16 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
2009 AMC 12 A Results for Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
114.0 1 1
106.5 1 1
103.5 1 1
96.0 1 1
93.0 1 1
91.5 1 1
90.0 2 1 1
88.5 3 2 1 1 3
87.0 2 1 1
85.5 4 2 3 2 1
84.0 6 1 3 4
82.5 2 1 2
81.0 5 5 7 4
79.5 7 2 2 6 1
78.0 6 4 6 4
76.5 6 4 5 6 1
75.0 7 1 1 7
73.5 7 4 1 7 4
72.0 17 4 15 7 1
70.5 9 4 8 7
69.0 9 5 1 8 5
67.5 12 6 8 11
66.0 13 9 3 14 6 1
64.5 11 11 2 14 7 1
63.0 10 7 11 8
61.5 7 5 8 8 1
60.0 12 9 1 14 8 1
58.5 15 4 10 9
57.0 9 6 1 4 10 2
55.5 10 7 11 6 1
54.0 3 7 7 6
52.5 6 7 10 3 1
51.0 10 1 8 3 1
49.5 3 5 5 4 2
48.0 7 10 1 7 9 2
46.5 9 7 11 5
45.0 5 7 8 5 1
43.5 4 8 9 6
42.0 4 5 6 3 3
40.5 4 8 7 6 1
39.0 2 2 2 2 1
37.5 3 2 3 3 3
36.0 1 6 5 2
34.5 1 1 2 1
33.0 1 1
31.5 2 2
30.0 5 1 1 2 3 1
28.5 1 1
25.5 1 1
24.0 3 1 2
22.5 1 1 1
19.5 1
American Mathematics Competitions
2009 AMC 12 A Results for Idaho
Analysis
Table of Item Difficulty for the 2009
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 79.33* 7.48 0.39 0.79 3.15 8.86 0.00
2 0.20 4.53 81.10* 3.94 4.72 5.51 0.00
3 7.48 71.65* 3.94 6.30 2.56 8.07 0.00
4 91.14* 1.38 0.20 1.38 1.38 4.13 0.39
5 1.97 2.36 2.36 73.03* 0.79 19.49 0.00
6 25.98 5.51 2.56 15.35 26.38* 24.21 0.00
7 2.76 12.40* 6.50 4.72 1.77 71.85 0.00
8 47.83* 2.17 7.68 4.53 10.04 27.76 0.00
9 1.77 4.33 6.30 22.24* 7.68 57.68 0.00
10 2.56 6.50 30.51* 10.24 6.50 43.70 0.00
11 1.57 4.33 4.92 7.28 55.71* 26.18 0.00
12 10.83 16.54* 8.27 8.27 3.35 52.76 0.00
13 10.24 10.24 10.63 11.42* 5.31 51.97 0.20
14 3.54 4.53* 6.30 10.43 8.27 66.73 0.20
15 8.86 7.87 7.68 15.94* 6.50 53.15 0.00
16 15.55 7.48 5.71 4.72* 2.95 63.58 0.00
17 5.51 4.13 5.12* 4.13 9.45 71.65 0.00
18 10.43 5.51* 5.91 2.95 2.17 73.03 0.00
19 9.84 11.42 3.54* 9.45 7.48 58.27 0.00
20 3.35 1.18 7.48 5.12 7.68* 75.20 0.00
21 6.10 4.33 4.33* 2.17 3.94 78.94 0.20
22 3.94 3.35 4.33 3.74 2.95* 81.50 0.20
23 2.36 3.15 3.35 2.95* 1.18 87.01 0.00
24 9.06 4.92 3.35 3.15 1.18* 78.35 0.00
25 2.36* 6.50 3.74 5.51 5.12 76.77 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
2009 AMC 10 B Results for Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
115.5 1 1
105.0 1 1
87.0 1 1
84.0 2 1 1
82.5 1 1
79.5 1
78.0 1 1
76.5 1 1
75.0 1 1
72.0 1 1
70.5 1 1
67.5 1 1 1
64.5 1 3 1
63.0 1
61.5 1 1
60.0 1 1
57.0 1 1 1 1
55.5 3 4 1
54.0 2 2 4
52.5 1 1
51.0 2 1 2 2 1
49.5 2 2
48.0 1 1 1
46.5 2 1 2 1
45.0 1 1
43.5 2 2
42.0 2 2
40.5 1 1 1 1
37.5 1 1
36.0 1 1
33.0 1 2
30.0 1 1
24.0 1 1
American Mathematics Competitions
2009 AMC 10 B Results for Idaho
Analysis
Table of Item Difficulty for the 2009
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.00 68.97* 8.62 17.24 1.72 3.45 0.00
2 1.72 1.72 82.76* 1.72 0.00 12.07 0.00
3 1.72 8.62 67.24* 17.24 1.72 3.45 0.00
4 1.72 5.17 55.17* 15.52 5.17 17.24 0.00
5 13.79 0.00 29.31 37.93* 3.45 15.52 0.00
6 0.00 3.45 6.90 63.79* 6.90 18.97 0.00
7 17.24 20.69 41.38* 12.07 5.17 3.45 0.00
8 1.72 17.24* 5.17 53.45 1.72 20.69 0.00
9 29.31* 5.17 1.72 12.07 5.17 46.55 0.00
10 8.62 6.90 5.17 8.62 20.69* 50.00 0.00
11 53.45* 8.62 8.62 6.90 0.00 22.41 0.00
12 13.79* 17.24 15.52 17.24 6.90 29.31 0.00
13 3.45 13.79 27.59* 8.62 12.07 34.48 0.00
14 3.45 34.48 18.97 12.07* 3.45 27.59 0.00
15 12.07 5.17 6.90 12.07 37.93* 25.86 0.00
16 8.62 8.62* 0.00 1.72 3.45 77.59 0.00
17 34.48 17.24 12.07* 1.72 1.72 32.76 0.00
18 3.45 1.72 12.07 8.62* 8.62 65.52 0.00
19 6.90* 27.59 17.24 6.90 1.72 39.66 0.00
20 6.90 13.79* 3.45 0.00 1.72 74.14 0.00
21 1.72 6.90 6.90 5.17* 6.90 72.41 0.00
22 1.72 3.45* 1.72 3.45 1.72 87.93 0.00
23 3.45 6.90 15.52* 6.90 6.90 60.34 0.00
24 10.34* 15.52 1.72 6.90 6.90 58.62 0.00
25 20.69 5.17* 12.07 3.45 10.34 48.28 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
2009 AMC 12 B Results for Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
114.0 1 1
106.5 1 1
96.0 1 1
87.0 1 1
73.5 1 1
72.0 1 1
70.5 1
69.0 2 2
67.5 1 1
66.0 2 1 1
63.0 1 1
61.5 1 1
60.0 1 1
58.5 2 2
57.0 1 1
55.5 1 1
54.0 1 1
52.5 1 1
51.0 4 3 1
49.5 1 1
48.0 1 1
46.5 3 3
45.0 1 1
43.5 3 1 4
42.0 2 2
39.0 2 2
19.5 1 1
American Mathematics Competitions
2009 AMC 12 B Results for Idaho
Analysis
Table of Item Difficulty for the 2009
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.00 70.00* 2.50 25.00 2.50 0.00 0.00
2 0.00 2.50 72.50* 15.00 2.50 7.50 0.00
3 7.50 0.00 20.00 62.50* 2.50 7.50 0.00
4 2.50 10.00 67.50* 7.50 2.50 10.00 0.00
5 0.00 5.00 0.00 75.00* 0.00 20.00 0.00
6 12.50 20.00 50.00* 10.00 5.00 2.50 0.00
7 5.00 30.00* 10.00 42.50 5.00 7.50 0.00
8 5.00 10.00 5.00 15.00 52.50* 12.50 0.00
9 27.50* 2.50 7.50 0.00 0.00 62.50 0.00
10 30.00* 27.50 5.00 7.50 5.00 25.00 0.00
11 2.50 25.00 30.00 10.00* 2.50 30.00 0.00
12 0.00 0.00 7.50 5.00 15.00* 72.50 0.00
13 10.00 5.00 5.00 7.50* 2.50 70.00 0.00
14 10.00 20.00 12.50* 0.00 0.00 57.50 0.00
15 0.00 25.00* 12.50 5.00 0.00 57.50 0.00
16 0.00 2.50* 0.00 7.50 0.00 90.00 0.00
17 17.50 15.00* 2.50 0.00 10.00 55.00 0.00
18 7.50 5.00 10.00* 5.00 2.50 70.00 0.00
19 0.00 0.00 0.00 0.00 2.50* 97.50 0.00
20 0.00 0.00 2.50* 5.00 2.50 90.00 0.00
21 5.00* 2.50 2.50 12.50 20.00 57.50 0.00
22 2.50 0.00 0.00* 2.50 2.50 92.50 0.00
23 0.00 0.00 0.00 0.00* 2.50 97.50 0.00
24 5.00 2.50* 0.00 2.50 2.50 87.50 0.00
25 2.50 2.50 7.50 0.00 2.50* 85.00 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column