American Mathematics Competitions
2009 AMC 10 A Results for Maryland
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 573
Number of unofficial participants: 11
Average score of participants: 72.6
Average score for female students is: 66.9 ( 159 Students)
Average score for male students is: 76.1 ( 337 Students)
Average score for unspecified gender is 69.1 ( 77 Students)
Average score for grade 10 is: 70.5 ( 278 Students)
Average score for grade 9 is: 71.3 ( 211 Students)
Average score for grade 8 and below is: 99.5 ( 46 Students)
Average score with unknown grade: 63.1 ( 38 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 15
Number of schools returning results 34
Average school winning score 104.69
American Mathematics Competitions
2009 AMC 12 A Results for Maryland
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 1000
Number of unofficial participants: 7
Average score of participants: 71.3
Average score for female students is: 66.3 ( 311 Students)
Average score for male students is: 74.3 ( 518 Students)
Average score for unspecified gender is 71.0 ( 171 Students)
Average score for grade 12 is: 73.1 ( 366 Students)
Average score for grade 11 is: 70.0 ( 442 Students)
Average score for grade 10 is: 72.8 ( 112 Students)
Average score for grade 9 is: 68.9 ( 29 Students)
Average score for grade 8 and below is: 88.5 ( 1 Student)
Average score with unknown grade: 66.8 ( 50 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 44
Number of schools returning results 41
Average school winning score 99.15
Average school team score 270.59
American Mathematics Competitions
2009 AMC 10 B Results for Maryland
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 214
Number of unofficial participants: 0
Average score of participants: 85.2
Average score for female students is: 79.2 ( 70 Students)
Average score for male students is: 88.4 ( 113 Students)
Average score for unspecified gender is 86.9 ( 31 Students)
Average score for grade 10 is: 85.8 ( 107 Students)
Average score for grade 9 is: 83.1 ( 64 Students)
Average score for grade 8 and below is: 87.7 ( 37 Students)
Average score with unknown grade: 80.5 ( 6 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 12
Number of schools returning results 16
Average school winning score 106.59
American Mathematics Competitions
2009 AMC 12 B Results for Maryland
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 364
Number of unofficial participants: 0
Average score of participants: 79.9
Average score for female students is: 73.6 ( 87 Students)
Average score for male students is: 81.8 ( 214 Students)
Average score for unspecified gender is 82.0 ( 63 Students)
Average score for grade 13 is: 63.0 ( 1 Student)
Average score for grade 12 is: 81.2 ( 157 Students)
Average score for grade 11 is: 78.6 ( 147 Students)
Average score for grade 10 is: 80.1 ( 34 Students)
Average score for grade 9 is: 81.6 ( 10 Students)
Average score for grade 8 and below is: 83.3 ( 6 Students)
Average score with unknown grade: 74.7 ( 9 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 64
Number of schools returning results 20
Average school winning score 100.72
Average school team score 275.55
2009 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
390.0 1 1
373.5 1 2
363.0 1 3
355.5 1 4
336.0 1 5
331.5 1 6
330.0 1 7
327.0 1 8
324.0 1 9
321.0 1 10
318.0 1 11
309.0 1 12
303.0 2 13
301.5 1 15
298.5 2 16
297.0 1 18
289.5 1 19
288.0 2 1 20
286.5 1 23
285.0 2 1 24
283.5 1 27
282.0 1 28
280.5 1 29
277.5 1 30
276.0 1 31
273.0 1 32
271.5 2 33
270.0 2 35
267.0 2 37
265.5 1 39
264.0 1 40
261.0 1 1 41
259.5 1 43
258.0 2 44
253.5 1 46
249.0 1 47
246.0 1 48
240.0 1 49
238.5 1 50
237.0 1 51
225.0 1 52
223.5 1 53
222.0 1 54
219.0 1 55
214.5 1 56
211.5 1 57
208.5 1 58
141.0 1 59
118.5 1 60
66.0 1 61
2009 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
150.0 1 1 1
145.5 1
144.0 1
139.5 1 1
138.0 1 1
136.5 1
135.0 1 2
133.5 1
132.0 3 1
129.0 1 2
127.5 1 1
126.0 1 1 1
124.5 1 1
123.0 1 1
121.5 1 1
120.0 1 4
118.5 1 3 1 2
117.0 2 4 2
115.5 1 1 1
114.0 3 3 3
112.5 4 4
111.0 2 2 2 2
109.5 10 4
108.0 3 2 6 4
106.5 2 5 2 4
105.0 1 12 3 8
103.5 3 6 2 3
102.0 5 3 7 3
100.5 6 7 2 4
99.0 11 10 9 3
97.5 4 9 7 9
96.0 14 4 14 4
94.5 26 9 7 8
93.0 17 8 4 7
91.5 14 8 6 9
90.0 16 4 12 7
88.5 26 18 8 5
87.0 22 8 13 3
85.5 31 4 14 5
84.0 16 7 16 5
82.5 25 14 12 1
81.0 19 16 12 8
79.5 37 13 15 3
78.0 28 11 10 6
76.5 31 8 20 2
75.0 25 10 14 4
73.5 37 5 18 9
72.0 39 7 17 9
70.5 44 14 15 4
69.0 37 7 16 3
67.5 37 11 23 7
66.0 51 6 19 7
64.5 51 7 13 2
63.0 39 9 20 3
61.5 31 10 16 1
60.0 37 5 18 4
58.5 25 5 9 2
57.0 25 7 16
55.5 22 5 13 3
54.0 20 6 15 3
52.5 18 5 11 1
51.0 10 3 14 1
49.5 13 5 13 1
48.0 17 2 10 4
46.5 10 2 7 1
45.0 9 2 9 1
43.5 5 1 4 3
42.0 8 6 8
40.5 3 6
39.0 4 1
37.5 6 2 4 1
36.0 5 3 2
34.5 3 1 3 1
33.0 2 2
31.5 3 1
30.0 2
28.5 1 1
25.5 1 2
21.0 1
American Mathematics Competitions
2009 AMC 10 A Results for Maryland
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
150.0 1 1
144.0 1 1
139.5 1 1
138.0 1 1
135.0 2 1 1
133.5 1 1
132.0 3 1 1 1
127.5 1 1
126.0 1 1
124.5 1 1
123.0 1 1
121.5 1 1
118.5 1 1
117.0 3 2 1 1
115.5 1 1
114.0 3 1 1 1
112.5 3 1 1 1 1
111.0 1 1 1 1
108.0 4 1 1 3 1
106.5 2 1 1
105.0 3 2 1
103.5 1 2
102.0 5 2 2 4 1
100.5 1 1 1 1
99.0 6 2 2 3 4
97.5 7 4 3
96.0 8 5 1 4 9
94.5 4 1 1 2 4
93.0 3 1 3
91.5 4 1 2 1 2 1
90.0 7 3 1 1 3 5 2
88.5 4 3 1 3 3 1
87.0 11 1 1 1 4 7
85.5 6 6 1 1 9 3
84.0 10 3 1 4 11
82.5 5 3 4 6 2
81.0 8 3 6 6
79.5 11 3 6 8 1
78.0 8 2 1 9
76.5 12 5 10 10
75.0 6 6 1 7 6
73.5 11 5 10 7 1
72.0 11 5 10 7
70.5 8 6 1 6 8
69.0 13 3 1 5 10
67.5 16 4 1 6 14 2
66.0 12 5 8 11
64.5 9 4 5 8
63.0 9 7 6 10 4
61.5 8 5 1 5 9 1
60.0 9 5 1 9 6 2
58.5 5 4 4 5
57.0 10 6 5 11
55.5 5 7 4 8 1
54.0 6 6 3 9 3
52.5 7 2 1 1 4 4 1
51.0 4 6 5 5 4
49.5 4 5 5 6 2
48.0 6 2 5 4 1
46.5 4 1 1 4 2
45.0 5 2 6 2 1
43.5 1 1 1 2
42.0 1 5 1 6 1
40.5 3 3 4 2
37.5 2 1 2 1 1
36.0 2 1 2 1
34.5 2 1 2 1
33.0 1 1 2
31.5 1 1
30.0 1 1 1 1
25.5 2 1 1
21.0 1 1
American Mathematics Competitions
2009 AMC 10 A Results for Maryland
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 0.35 0.00 0.87 6.46 91.62* 0.70 0.00
2 93.37* 0.87 1.75 1.92 0.70 1.40 0.00
3 2.09 4.19 82.90* 4.36 2.27 4.19 0.00
4 38.74* 5.93 4.36 9.08 12.57 29.32 0.00
5 9.08 2.79 4.89 2.62 57.59* 22.86 0.17
6 69.81* 3.14 4.36 3.14 1.40 18.15 0.00
7 6.98 5.58 39.09* 2.97 22.34 23.04 0.00
8 5.93 84.12* 1.75 1.57 1.57 4.89 0.17
9 9.77 28.27* 8.73 3.66 1.22 48.34 0.00
10 2.44 23.56* 4.19 12.04 2.27 55.50 0.00
11 1.92 2.44 3.14 67.36* 1.40 23.73 0.00
12 4.01 6.28 26.53* 8.03 6.81 48.34 0.00
13 20.24 4.54 3.14 10.82 21.82* 39.44 0.00
14 48.87* 0.70 3.84 3.66 12.74 30.19 0.00
15 2.09 3.49 3.32 5.58 54.62* 30.89 0.00
16 22.34 4.19 3.14 15.01* 6.98 48.34 0.00
17 3.49 8.90 9.42* 2.79 2.27 73.12 0.00
18 14.49 13.96 6.11 19.20* 6.28 39.97 0.00
19 5.58 15.53* 9.25 5.24 1.92 62.48 0.00
20 7.33 5.76 8.90 39.27* 3.32 35.43 0.00
21 3.14 3.84 11.69* 4.54 2.27 74.52 0.00
22 6.81 6.11 28.97 8.90* 1.57 47.64 0.00
23 2.44 2.27 4.36 4.36 6.28* 80.28 0.00
24 8.73 13.09 7.85* 4.71 5.06 60.56 0.00
25 8.03 4.54* 5.06 3.32 4.01 75.04 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 Maryland
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
150.0 1 1
138.0 1 1
129.0 1 1
126.0 1 1
124.5 1
120.0 1 1
118.5 1 1
111.0 2 1 1
108.0 1 1 1 1
106.5 1 1 1
105.0 1 1
103.5 3 1 2
102.0 4 4 1
100.5 6 3 3
99.0 6 3 2 5 4
97.5 3 1 3
96.0 9 3 1 4 9
94.5 18 3 5 8 13
93.0 11 2 1 4 4 8
91.5 9 4 2 7 5
90.0 6 4 1 7 8
88.5 18 6 1 3 13 8 1
87.0 17 4 2 1 6 13
85.5 21 7 4 15 12
84.0 10 3 8 6 2
82.5 18 3 5 9 11
81.0 17 1 5 9 5
79.5 19 12 1 1 20 14 1
78.0 16 8 1 5 13 9
76.5 19 6 1 2 8 16 4
75.0 13 10 3 11 11
73.5 19 12 2 5 12 16 2
72.0 17 15 1 4 18 11 5
70.5 24 13 1 5 17 19 2
69.0 14 12 3 4 14 14 2
67.5 16 14 3 5 17 10 2
66.0 24 15 3 4 25 15 4
64.5 21 18 3 23 22 3
63.0 18 15 4 2 21 10 2
61.5 11 14 2 3 14 10 2
60.0 15 15 1 7 16 12 1
58.5 8 12 1 3 8 11 2
57.0 11 11 4 13 5 3
55.5 11 7 1 2 10 7 2
54.0 7 7 3 9 7 1
52.5 7 9 2 12 2 2
51.0 4 4 1 5 4
49.5 5 8 2 6 4 1
48.0 10 4 1 8 7 1
46.5 2 7 9 1
45.0 3 6 1 5 3
43.5 1 2 1 2 2
42.0 4 2 4 3 1
40.5 1 2 2 1
39.0 2 2 1 1 2
37.5 3 2 3 3
36.0 3 1 2 2 1
34.5 2 1 2 1
33.0 2 1 1
28.5 1 1
American Mathematics Competitions
2009 AMC 12 A Results for Maryland
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 93.90* 3.20 0.50 0.40 0.60 1.40 0.00
2 0.60 2.50 94.10* 1.70 0.80 0.30 0.00
3 3.40 86.50* 2.30 3.40 1.00 3.40 0.00
4 96.00* 0.30 0.70 0.60 0.90 1.50 0.00
5 1.00 1.70 1.80 86.80* 1.00 7.70 0.00
6 18.10 4.00 1.90 8.70 44.80* 22.50 0.00
7 2.20 34.30* 5.70 2.10 1.90 53.80 0.00
8 62.10* 1.50 4.50 4.00 7.50 20.40 0.00
9 2.90 3.10 3.80 43.00* 3.00 44.20 0.00
10 2.70 4.80 36.90* 7.40 7.00 41.20 0.00
11 1.50 2.40 2.00 4.10 74.40* 15.60 0.00
12 10.60 31.90* 6.70 4.40 1.80 44.60 0.00
13 8.10 8.40 14.10 20.40* 5.60 43.40 0.00
14 3.20 7.50* 7.20 10.00 4.20 67.90 0.00
15 8.00 4.30 8.50 27.20* 4.50 47.50 0.00
16 10.80 4.50 6.90 6.70* 1.90 69.20 0.00
17 5.00 3.60 8.60* 3.20 6.90 72.70 0.00
18 11.20 5.90* 4.40 2.50 3.20 72.80 0.00
19 6.40 6.00 6.20* 5.40 8.20 67.70 0.10
20 2.50 2.80 5.50 3.20 8.50* 77.50 0.00
21 3.90 4.00 3.80* 3.00 3.80 81.50 0.00
22 1.60 3.50 2.60 3.20 2.40* 86.70 0.00
23 1.20 2.00 2.40 2.60* 0.70 91.10 0.00
24 4.30 4.10 4.20 2.90 1.60* 82.90 0.00
25 2.50* 3.50 4.00 4.70 4.90 80.40 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 Maryland
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
150.0 1 1
145.5 1
139.5 1 1
136.5 1 1
132.0 1 1
127.5 1 1
123.0 1 1
121.5 1 1
120.0 1 2 1 1 2
118.5 2 1 1
117.0 2 2
115.5 1 1
114.0 3 3
111.0 1 2
109.5 3 1 1 3
108.0 2 1 2 2
106.5 4 3 1
105.0 6 1 1 1 1 5
103.5 1 1 1 1
102.0 1 2 2 1
100.5 1 2 1 1 2
99.0 2 1 2
97.5 2 4 2 2 5
96.0 3 1 1 2 1
94.5 3 3 1 3 4
93.0 4 1 1 1 5
91.5 8 1 1 8
90.0 3 4 1 1 3 2
88.5 2 1 1 3 1
87.0 3 1 2
85.5 4 1 1 1 1 2
84.0 4 1 3 1
82.5 1 1
81.0 2 5 1 1 6
79.5 1 2 3
78.0 3 2 2 1 3
76.5 2 1 1
75.0 1 3 2 2
73.5 6 2 2 2 5
72.0 4 5 2 1 2 1 3
70.5 1 2 1 2 1
69.0 1 2 1
67.5 3 3 1 5 1
66.0 5 2 1 2 4
64.5 1 1 2
63.0 2 2 1
61.5 1
60.0 1 3 2 2
58.5 1 1 1 1
55.5 2 1 2
54.0 2 1 1 2
52.5 1 1
51.0 1 1
49.5 1 1
48.0 3 1 1 2 1
46.5 1 1
45.0 1
43.5 3 3
37.5 1 1
36.0 1 2
34.5 1 1
American Mathematics Competitions
2009 AMC 10 B Results for Maryland
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 1.40 81.78* 3.74 8.41 3.27 0.93 0.47
2 0.47 0.47 98.13* 0.47 0.00 0.47 0.00
3 0.93 0.93 80.37* 12.62 1.87 3.27 0.00
4 0.93 1.40 82.24* 9.35 0.93 5.14 0.00
5 2.34 0.93 14.49 75.70* 0.93 5.61 0.00
6 1.40 1.87 2.80 86.92* 0.93 6.07 0.00
7 4.67 9.81 70.56* 7.01 3.27 4.67 0.00
8 7.48 58.41* 7.01 11.21 1.87 14.02 0.00
9 63.55* 2.80 2.80 7.94 3.74 19.16 0.00
10 3.27 0.93 2.80 4.21 71.96* 16.82 0.00
11 76.64* 2.80 0.47 4.21 0.47 15.42 0.00
12 31.31* 11.68 10.75 12.15 11.21 22.43 0.47
13 1.87 13.55 63.55* 4.21 7.48 9.35 0.00
14 4.21 27.10 15.42 21.96* 4.67 26.64 0.00
15 3.74 1.40 1.40 4.21 73.36* 15.89 0.00
16 3.27 18.69* 5.61 1.87 6.07 64.49 0.00
17 6.54 7.01 36.92* 2.80 1.40 44.86 0.47
18 3.27 3.27 5.61 23.83* 1.87 62.15 0.00
19 31.78* 14.49 11.21 3.74 1.40 37.38 0.00
20 4.21 18.22* 7.01 3.27 2.34 64.95 0.00
21 7.48 14.49 7.48 13.55* 1.40 55.61 0.00
22 1.40 7.48* 3.74 2.34 2.80 82.24 0.00
23 2.80 3.74 7.01* 3.27 3.74 79.44 0.00
24 14.95* 2.80 4.21 2.80 2.34 72.90 0.00
25 16.82 13.55* 4.67 3.74 1.87 59.35 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 Maryland
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
135.0 1 1
129.0 2 1 1
126.0 1 1
118.5 2 3
117.0 2
115.5 1 1
114.0 3 1 1 1
112.5 2 1 1 1 2
111.0 1 1 1 1
109.5 6 2 7 3
108.0 1 1 1
106.5 5 1 1 1 2
105.0 7 2 3 4 5
103.5 4 2 2 4
102.0 2 1 2 1
100.5 3 2 1 4 2
99.0 7 2 1 2 7
97.5 8 1 3 4 1
96.0 3 1 2 1
94.5 6 9
93.0 6 2 3 4 1
91.5 3 2 1 4 1 2
90.0 3 1 3
88.5 13 3 1 3 14
87.0 4 4 1 2 1 4
85.5 3 1 1 1 2
84.0 5 2 1 4 2
82.5 6 2 6 8
81.0 10 3 1 1 9 5
79.5 7 4 1 6 6
78.0 5 1 2 3 5 1
76.5 3 3 2 6
75.0 5 3 1 1 2 5 1
73.5 3 2 1 2 2
72.0 3 3 1 1 2 3
70.5 9 4 2 3 9
69.0 3 3 1 1 3 1 1
67.5 10 1 1 7 3
66.0 2 2 3 2 1
64.5 4 2 1 2 4
63.0 4 3 1 5 2 1
61.5 7 1 4 5
60.0 2 2 1 3 1
58.5 1 2 2 3
57.0 4 1 1 4 1 1
55.5 2 3 2 3
54.0 4 2 1 1 2 2
52.5 2 3 1 2 2
51.0 2 1 3
49.5 3 2 1 4
48.0 1 2
46.5 1 1 1
45.0 1 1 1
43.5 1 1
42.0 3 3 3 3
39.0 1 1
37.5 1 1 1 1
34.5 1 1
31.5 2 1 1 2
28.5 1 1
25.5 1 1
American Mathematics Competitions
2009 AMC 12 B Results for Maryland
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 0.27 84.34* 3.30 9.07 2.47 0.55 0.00
2 0.00 1.37 85.71* 9.62 0.55 2.75 0.00
3 1.65 1.10 10.44 82.42* 1.37 3.02 0.00
4 0.00 0.82 87.36* 7.42 1.65 2.75 0.00
5 0.27 0.55 2.75 87.64* 1.92 6.87 0.00
6 6.32 9.89 71.98* 6.04 2.20 3.30 0.27
7 5.22 68.68* 6.59 10.71 1.92 6.32 0.55
8 1.65 1.92 1.10 3.02 82.14* 10.16 0.00
9 66.76* 3.57 1.10 7.69 0.55 20.05 0.27
10 55.77* 14.29 6.32 4.67 1.37 17.58 0.00
11 2.47 22.53 17.31 30.22* 8.52 18.96 0.00
12 1.10 1.65 4.95 2.47 56.32* 33.52 0.00
13 2.20 3.30 6.32 33.52* 4.95 49.45 0.27
14 8.24 7.69 48.90* 1.65 0.27 33.24 0.00
15 0.55 57.97* 2.75 5.49 3.85 29.40 0.00
16 2.75 2.75* 1.37 0.27 1.10 91.76 0.00
17 16.76 24.18* 6.59 5.49 3.30 43.68 0.00
18 3.02 4.95 20.33* 5.22 3.02 63.46 0.00
19 0.82 1.92 3.02 0.00 4.95* 89.29 0.00
20 1.10 2.75 7.69* 1.10 2.75 84.34 0.27
21 5.49* 2.75 4.12 10.44 15.11 62.09 0.00
22 1.65 1.65 1.37* 2.20 0.82 92.31 0.00
23 1.10 2.47 1.10 4.95* 0.82 89.56 0.00
24 7.97 2.75* 1.65 4.40 1.37 81.59 0.27
25 6.59 2.20 1.65 1.92 1.65* 85.71 0.27
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column