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Missing Title
American Mathematics Competitions
2009 AMC 10 A Results for North Carolina
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 1748
Number of unofficial participants: 0
Average score of participants: 70.8
Average score for female students is: 65.1 ( 655 Students)
Average score for male students is: 74.2 ( 864 Students)
Average score for unspecified gender is 74.8 ( 229 Students)
Average score for grade 10 is: 72.6 ( 642 Students)
Average score for grade 9 is: 69.9 ( 467 Students)
Average score for grade 8 and below is: 67.5 ( 484 Students)
Average score with unknown grade: 76.6 ( 155 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 43
Number of schools returning results 84
Average school winning score 103.71
American Mathematics Competitions
2009 AMC 12 A Results for North Carolina
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 1998
Number of unofficial participants: 0
Average score of participants: 67.4
Average score for female students is: 64.2 ( 763 Students)
Average score for male students is: 69.9 ( 958 Students)
Average score for unspecified gender is 67.4 ( 277 Students)
Average score for grade 13 is: 60.0 ( 1 Student)
Average score for grade 12 is: 68.1 ( 835 Students)
Average score for grade 11 is: 66.5 ( 906 Students)
Average score for grade 10 is: 69.8 ( 105 Students)
Average score for grade 9 is: 66.9 ( 19 Students)
Average score for grade 8 and below is: 60.0 ( 1 Student)
Average score with unknown grade: 67.2 ( 131 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 69
Number of schools returning results 66
Average school winning score 92.59
Average school team score 250.66
American Mathematics Competitions
2009 AMC 10 B Results for North Carolina
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 625
Number of unofficial participants: 0
Average score of participants: 66.0
Average score for female students is: 62.5 ( 252 Students)
Average score for male students is: 70.0 ( 273 Students)
Average score for unspecified gender is 63.7 ( 100 Students)
Average score for grade 10 is: 66.3 ( 246 Students)
Average score for grade 9 is: 62.6 ( 210 Students)
Average score for grade 8 and below is: 77.8 ( 113 Students)
Average score with unknown grade: 53.0 ( 56 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 17
Number of schools returning results 37
Average school winning score 100.38
American Mathematics Competitions
2009 AMC 12 B Results for North Carolina
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 735
Number of unofficial participants: 0
Average score of participants: 71.0
Average score for female students is: 64.7 ( 248 Students)
Average score for male students is: 74.4 ( 389 Students)
Average score for unspecified gender is 73.1 ( 98 Students)
Average score for grade 12 is: 70.7 ( 229 Students)
Average score for grade 11 is: 67.2 ( 284 Students)
Average score for grade 10 is: 75.1 ( 103 Students)
Average score for grade 9 is: 83.8 ( 43 Students)
Average score for grade 8 and below is: 76.1 ( 48 Students)
Average score with unknown grade: 67.8 ( 28 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 35
Number of schools returning results 47
Average school winning score 95.39
Average school team score 257.49
2009 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
387.0 1 1
375.0 1 2
373.5 1 3
372.0 1 4
336.0 1 5
333.0 1 6
328.5 1 7
325.5 1 8
324.0 1 9
322.5 1 10
316.5 1 11
312.0 1 12
307.5 1 13
306.0 1 14
303.0 1 15
300.0 1 16
298.5 1 1 17
297.0 1 19
295.5 1 20
294.0 1 1 21
292.5 1 23
291.0 2 1 24
289.5 1 27
288.0 2 28
286.5 1 30
285.0 1 1 31
283.5 1 33
282.0 2 34
280.5 2 1 36
279.0 1 39
276.0 3 2 40
274.5 1 45
273.0 1 46
271.5 1 1 47
270.0 1 49
268.5 1 1 50
267.0 2 52
265.5 1 1 54
264.0 2 56
261.0 4 58
256.5 3 62
255.0 1 65
253.5 1 1 66
250.5 1 68
249.0 1 69
244.5 2 1 70
241.5 1 73
240.0 1 74
238.5 1 75
237.0 1 76
234.0 1 77
231.0 2 78
229.5 1 80
228.0 3 81
226.5 1 1 84
225.0 2 86
219.0 1 88
216.0 3 1 89
214.5 1 93
210.0 1 94
207.0 1 95
205.5 1 96
204.0 1 97
202.5 1 98
201.0 1 99
199.5 1 100
198.0 1 101
192.0 1 102
187.5 1 103
186.0 1 104
180.0 1 105
177.0 1 106
171.0 1 107
169.5 1 108
99.0 1 109
91.5 1 110
90.0 1 111
2009 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
150.0 4 5
145.5 1
144.0 1 1
141.0 1
139.5 2
138.0 1 3
136.5 1
135.0 1 1
133.5 1 3 1
132.0 2
130.5 2 2
129.0 1 1 1 2
127.5 2 1 2 1
126.0 2 2
124.5 3 1
123.0 3
121.5 2 2 4
120.0 1 10 1
118.5 2 1 3
117.0 1 2 1
115.5 2 2
114.0 1 5 1
112.5 2 1 5 2
111.0 1 1 4 1
109.5 5 5 11 2
108.0 1 2 18 1
106.5 3 2 8 1
105.0 4 1 9
103.5 4 2 17 2
102.0 7 4 15 3
100.5 7 9 17 4
99.0 15 8 16 1
97.5 6 9 21 3
96.0 16 11 25 12
94.5 20 17 23 3
93.0 13 14 25 8
91.5 21 9 23 8
90.0 24 14 31 10
88.5 19 27 23 9
87.0 32 9 38 4
85.5 25 14 27 8
84.0 24 18 48 7
82.5 50 22 41 8
81.0 49 23 24 10
79.5 49 32 38 19
78.0 61 20 52 18
76.5 74 30 47 11
75.0 68 16 37 8
73.5 68 23 46 23
72.0 96 20 65 32
70.5 58 22 40 20
69.0 80 24 41 12
67.5 85 22 43 20
66.0 105 21 75 18
64.5 92 16 36 20
63.0 82 21 51 23
61.5 77 26 38 19
60.0 79 17 59 21
58.5 68 18 51 15
57.0 50 14 50 15
55.5 57 15 43 12
54.0 66 16 70 25
52.5 55 16 39 7
51.0 23 9 37 14
49.5 42 8 37 8
48.0 35 17 34 15
46.5 24 13 31 14
45.0 15 6 17 18
43.5 17 11 19 10
42.0 24 6 31 10
40.5 12 6 18 9
39.0 2 7 12 9
37.5 15 9 7 7
36.0 8 5 18 9
34.5 5 5 9 3
33.0 3 4 3 5
31.5 5 3 5
30.0 16 2 12 4
28.5 1 2 3 2
27.0 4 2 4
25.5 4 1 1 4
24.0 4 2 7 4
22.5 2 1 1 2
21.0 1
19.5 2 2
18.0 1 1
16.5 2
15.0 1
12.0 1 1
6.0 1
American Mathematics Competitions
2009 AMC 10 A Results for North Carolina
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 10 A Results for North Carolina
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 0.29 0.06 0.46 5.03 94.11* 0.06 0.00
2 95.08* 0.97 0.80 0.69 1.14 1.32 0.00
3 2.69 8.81 74.03* 4.00 4.35 6.06 0.06
4 31.98* 8.41 5.49 8.18 16.48 29.41 0.06
5 9.50 4.81 6.92 3.26 53.26* 22.25 0.00
6 67.56* 3.43 7.04 2.52 1.49 17.91 0.06
7 6.24 3.55 38.27* 3.89 26.37 21.68 0.00
8 8.35 83.01* 2.52 0.80 0.86 4.46 0.00
9 8.52 26.77* 8.01 5.21 0.92 50.57 0.00
10 4.23 23.00* 6.01 12.53 1.77 52.46 0.00
11 1.72 2.52 4.06 66.93* 1.89 22.88 0.00
12 3.15 7.32 31.75* 7.27 5.32 45.19 0.00
13 20.71 4.46 5.49 11.78 16.13* 41.36 0.06
14 48.00* 1.43 5.72 4.98 10.53 29.35 0.00
15 2.63 3.49 4.69 8.07 49.83* 31.24 0.06
16 22.20 6.86 4.75 13.84* 5.21 47.14 0.00
17 4.23 11.16 9.61* 3.32 4.12 67.56 0.00
18 15.33 11.90 8.24 22.94* 7.78 33.81 0.00
19 5.66 13.44* 10.24 6.92 2.52 61.21 0.00
20 7.38 7.61 9.21 40.96* 2.00 32.78 0.06
21 3.20 3.32 13.10* 3.78 2.97 73.63 0.00
22 6.29 6.46 28.95 7.78* 3.03 47.48 0.00
23 2.86 2.86 6.81 4.35 9.04* 74.03 0.06
24 8.18 13.73 8.81* 4.12 6.58 58.58 0.00
25 7.21 5.38* 7.32 3.78 4.18 72.14 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 North Carolina
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 12 A Results for North Carolina
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 89.44* 6.06 1.05 0.55 1.20 1.70 0.00
2 0.95 3.05 90.89* 2.15 1.50 1.45 0.00
3 5.26 83.38* 3.10 4.55 1.55 2.15 0.00
4 95.85* 0.65 0.65 0.65 1.10 1.10 0.00
5 1.25 1.90 1.75 86.79* 1.00 7.31 0.00
6 21.92 4.40 3.15 12.61 38.24* 19.62 0.05
7 2.55 24.17* 6.91 2.75 2.45 61.11 0.05
8 60.81* 1.60 4.95 5.81 8.71 18.12 0.00
9 2.80 4.35 5.61 36.64* 5.66 44.94 0.00
10 3.15 6.61 40.94* 8.16 7.36 33.73 0.05
11 1.65 3.00 3.45 7.31 68.07* 16.47 0.05
12 12.36 27.98* 7.16 6.96 3.30 42.24 0.00
13 9.86 11.56 14.86 16.17* 7.26 40.24 0.05
14 3.85 6.56* 8.81 11.81 6.51 62.46 0.00
15 8.96 5.36 8.06 23.07* 6.61 47.95 0.00
16 12.66 6.91 8.16 6.46* 3.90 61.91 0.00
17 5.01 4.65 8.16* 5.86 7.51 68.82 0.00
18 13.26 6.71* 5.96 3.35 3.55 67.12 0.05
19 9.36 8.16 6.76* 7.36 9.31 59.06 0.00
20 4.05 3.40 6.56 5.06 9.06* 71.87 0.00
21 4.85 5.16 6.26* 3.05 3.85 76.83 0.00
22 3.60 4.05 4.60 4.45 2.90* 80.38 0.00
23 2.15 3.15 3.85 2.75* 1.40 86.69 0.00
24 7.21 5.31 3.70 4.00 1.45* 78.33 0.00
25 1.85* 5.41 4.40 5.71 6.86 75.78 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 North Carolina
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 10 B Results for North Carolina
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 0.48 76.80* 6.40 12.32 2.72 1.28 0.00
2 4.32 1.60 86.40* 1.12 0.80 5.60 0.16
3 1.44 5.44 74.40* 10.08 1.60 7.04 0.00
4 3.52 4.48 67.36* 11.68 3.52 9.44 0.00
5 8.64 2.24 22.40 50.24* 3.04 13.44 0.00
6 2.56 2.08 8.16 67.20* 3.68 16.32 0.00
7 13.12 19.04 50.40* 7.36 5.12 4.64 0.32
8 3.36 32.48* 8.64 37.28 4.00 14.24 0.00
9 36.32* 4.16 6.88 9.28 4.00 39.36 0.00
10 11.20 2.88 3.84 5.92 34.88* 41.28 0.00
11 56.00* 8.16 5.12 4.00 3.84 22.72 0.16
12 23.84* 11.84 10.08 13.76 7.36 33.12 0.00
13 4.00 11.04 35.68* 8.48 11.84 28.96 0.00
14 5.92 30.72 19.20 14.08* 7.36 22.40 0.32
15 8.80 9.76 3.36 8.00 45.92* 24.16 0.00
16 2.40 12.96* 6.24 3.52 4.80 70.08 0.00
17 25.12 13.92 14.40* 1.44 1.92 43.20 0.00
18 4.32 4.16 8.80 12.64* 5.44 64.64 0.00
19 16.80* 20.64 10.24 11.20 4.48 36.64 0.00
20 6.88 13.60* 5.44 2.24 4.00 67.84 0.00
21 5.76 12.96 5.28 11.04* 3.20 61.76 0.00
22 3.36 4.16* 3.52 4.80 3.36 80.80 0.00
23 5.92 7.52 13.12* 5.44 4.48 63.52 0.00
24 11.84* 4.96 4.48 3.84 4.80 70.08 0.00
25 16.00 14.08* 9.12 7.04 5.76 48.00 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
2009 AMC 12 B Results for North Carolina
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 12 B Results for North Carolina
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 0.14 81.22* 5.31 10.07 2.31 0.95 0.00
2 0.82 1.77 81.90* 10.75 0.68 4.08 0.00
3 7.07 0.82 15.92 67.62* 2.99 5.58 0.00
4 0.95 2.31 82.45* 9.12 1.63 3.54 0.00
5 0.41 0.95 4.22 85.03* 0.68 8.71 0.00
6 7.21 13.06 64.76* 6.80 4.08 4.08 0.00
7 4.35 58.78* 8.30 17.14 2.86 8.57 0.00
8 2.99 4.35 2.99 3.81 71.56* 14.29 0.00
9 59.46* 4.90 2.72 6.67 0.41 25.85 0.00
10 40.95* 19.18 9.93 7.89 3.27 18.50 0.27
11 4.08 29.52 19.46 20.27* 7.35 19.32 0.00
12 1.77 2.72 6.67 3.67 37.28* 47.62 0.27
13 2.99 3.95 6.67 21.36* 5.31 59.73 0.00
14 10.61 11.97 37.69* 2.04 1.22 36.46 0.00
15 0.68 51.02* 7.48 8.30 4.90 27.62 0.00
16 4.63 4.22* 3.40 3.40 1.36 82.99 0.00
17 22.45 20.14* 7.76 6.67 4.08 38.91 0.00
18 4.35 6.94 14.29* 6.12 6.80 61.50 0.00
19 0.82 3.67 3.13 2.18 2.59* 87.62 0.00
20 1.63 4.08 3.27* 2.45 3.27 85.31 0.00
21 4.22* 4.08 5.03 13.47 20.82 52.38 0.00
22 1.90 2.86 4.90* 3.13 1.50 85.71 0.00
23 1.09 1.90 3.67 2.86* 2.18 88.30 0.00
24 5.99 4.76* 2.59 4.90 0.95 80.82 0.00
25 7.89 4.49 3.40 2.59 3.40* 78.23 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
