American Mathematics Competitions
2009 AMC 10 A Results for Delaware
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 355
Number of unofficial participants: 0
Average score of participants: 64.6
Average score for female students is: 61.3 ( 157 Students)
Average score for male students is: 68.1 ( 143 Students)
Average score for unspecified gender is 65.2 ( 55 Students)
Average score for grade 10 is: 65.5 ( 168 Students)
Average score for grade 9 is: 63.9 ( 155 Students)
Average score for grade 8 and below is: 81.0 ( 3 Students)
Average score with unknown grade: 62.4 ( 29 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 1
Number of schools returning results 11
Average school winning score 98.59
American Mathematics Competitions
2009 AMC 12 A Results for Delaware
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 334
Number of unofficial participants: 0
Average score of participants: 67.4
Average score for female students is: 63.7 ( 143 Students)
Average score for male students is: 71.4 ( 144 Students)
Average score for unspecified gender is 66.1 ( 47 Students)
Average score for grade 12 is: 69.9 ( 149 Students)
Average score for grade 11 is: 66.3 ( 147 Students)
Average score for grade 10 is: 61.5 ( 23 Students)
Average score with unknown grade: 60.5 ( 15 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 14
Number of schools returning results 11
Average school winning score 100.50
Average school team score 277.91
American Mathematics Competitions
2009 AMC 10 B Results for Delaware
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 32
Number of unofficial participants: 0
Average score of participants: 48.3
Average score for female students is: 46.0 ( 9 Students)
Average score for male students is: 50.0 ( 21 Students)
Average score for unspecified gender is 41.3 ( 2 Students)
Average score for grade 10 is: 36.0 ( 1 Student)
Average score for grade 9 is: 48.7 ( 31 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 1
Average school winning score 111.00
American Mathematics Competitions
2009 AMC 12 B Results for Delaware
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 34
Number of unofficial participants: 0
Average score of participants: 69.4
Average score for female students is: 61.9 ( 14 Students)
Average score for male students is: 74.1 ( 12 Students)
Average score for unspecified gender is 75.6 ( 8 Students)
Average score for grade 12 is: 69.5 ( 21 Students)
Average score for grade 11 is: 72.0 ( 12 Students)
Average score with unknown grade: 37.5 ( 1 Student)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 3
Number of schools returning results 2
Average school winning score 115.50
Average school team score 260.25
2009 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
330.0 1 1
328.5 1 2
309.0 1 3
291.0 1 4
286.5 1 5
280.5 1 6
273.0 1 7
271.5 2 8
244.5 1 10
234.0 1 11
229.5 1 12
228.0 1 13
2009 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
126.0 1
123.0 1
121.5 1 1
118.5 1
117.0 1
114.0 1
112.5 1 1 1
111.0 1 1
109.5 1
108.0 1
106.5 1 1
105.0 1 1
103.5 2
102.0 1 2
100.5 4 1
99.0 1 1
97.5 2 4
96.0 1
94.5 4 1
93.0 3 1 3
91.5 3 2
90.0 4 4
88.5 4 6
87.0 3 7
85.5 7 6
84.0 8 2 2
82.5 4 5
81.0 3 1 10
79.5 3 2 4
78.0 8 1 10
76.5 15 12
75.0 13 2 10
73.5 12 2 8
72.0 8 9
70.5 12 12
69.0 12 2 6
67.5 23 1 7
66.0 10 3 14
64.5 17 2 19 2
63.0 24 1 11
61.5 13 1 8
60.0 14 21
58.5 15 1 8
57.0 11 1 9 2
55.5 7 9 1
54.0 10 1 15
52.5 9 12 2
51.0 7 2 7 4
49.5 5 1 11 2
48.0 7 12 4
46.5 2 10
45.0 3 1 4 2
43.5 1 1 7
42.0 3 8 1
40.5 1 5 3
39.0 1 4
37.5 2 6 4
36.0 5 6 1
34.5 2 1 2
33.0 1
31.5 2
30.0 3
28.5 1 1
22.5 1
18.0 1
American Mathematics Competitions
2009 AMC 10 A Results for Delaware
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
121.5 1 1
118.5 1
114.0 1 1
112.5 1 1
111.0 1 1
108.0 1 1
106.5 1 1
105.0 1 1
103.5 2 2
102.0 2 1 1
100.5 1 1
99.0 1 1
97.5 3 1 2 1 1
96.0 1 1
94.5 1
93.0 2 1 3
91.5 1 1 1
90.0 2 1 2 1 1
88.5 3 1 1 2 2 1
87.0 5 3 3 1
85.5 1 4 4 1 1
84.0 2 1 1
82.5 1 2 2 3
81.0 4 5 2 7 1
79.5 1 3 2 2
78.0 5 3 1 8 1
76.5 4 6 5 6 1
75.0 6 2 4 6
73.5 2 3 1 5 2
72.0 1 6 2 6 1
70.5 6 6 5 7
69.0 2 4 5 1
67.5 3 2 4 3
66.0 5 8 6 8
64.5 10 8 10 8 1
63.0 4 5 4 5 2
61.5 4 3 4 4
60.0 10 5 8 10 3
58.5 4 3 2 5 1
57.0 4 4 4 4 1
55.5 2 6 3 6
54.0 7 5 9 5 1
52.5 4 8 9 3
51.0 5 2 4 3
49.5 5 5 6 5
48.0 2 10 5 7
46.5 2 7 5 4 1
45.0 2 1 2 1 1
43.5 1 3 1 3 2 1
42.0 3 3 2 4 2
40.5 1 4 3 2
39.0 3 2 2
37.5 1 2 1 2 3
36.0 2 4 4 2
34.5 1
33.0 1 1
31.5 2 1 1
28.5 1 1
22.5 1 1
American Mathematics Competitions
2009 AMC 10 A Results for Delaware
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 0.28 0.28 5.92 92.68* 0.85 0.00
2 93.52* 1.13 1.13 0.85 0.56 2.82 0.00
3 1.97 9.86 68.17* 6.20 4.51 9.30 0.00
4 24.23* 7.89 5.63 8.45 16.34 37.46 0.00
5 10.99 6.48 4.79 3.94 45.92* 27.89 0.00
6 57.46* 2.25 7.61 3.66 0.56 28.45 0.00
7 6.48 5.92 29.86* 3.38 27.32 26.76 0.28
8 9.30 78.31* 1.41 3.10 0.85 7.04 0.00
9 2.54 15.21* 9.01 5.35 0.56 67.32 0.00
10 4.23 20.56* 5.63 8.73 2.54 58.31 0.00
11 1.97 2.54 3.38 52.39* 2.25 37.46 0.00
12 4.23 7.04 26.48* 8.45 6.20 47.61 0.00
13 20.85 4.51 4.23 11.55 13.52* 45.35 0.00
14 36.34* 1.13 7.61 3.38 13.80 37.46 0.28
15 2.82 3.10 5.35 8.73 46.48* 33.52 0.00
16 25.07 6.20 3.66 7.89* 8.17 49.01 0.00
17 7.32 6.76 3.38* 2.54 4.23 75.77 0.00
18 19.15 10.99 6.48 18.03* 7.04 38.31 0.00
19 5.63 9.86* 7.32 7.89 2.25 67.04 0.00
20 8.17 9.01 9.01 35.49* 2.25 36.06 0.00
21 2.82 1.97 9.01* 4.79 2.25 79.15 0.00
22 5.92 6.20 35.21 7.04* 4.23 41.41 0.00
23 3.38 1.97 7.32 3.94 9.01* 74.37 0.00
24 9.01 15.21 5.63* 3.38 8.73 58.03 0.00
25 5.92 4.51* 4.79 2.54 3.66 78.59 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 Delaware
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
126.0 1 1
123.0 1
117.0 1 1
112.5 1 1
106.5 1 1
105.0 1 1
102.0 1 1
100.5 4 1 3
99.0 1
97.5 2 1 1
94.5 2 2 1 1 2
93.0 1 1 3
91.5 2 1 2
90.0 4 1 3
88.5 2 1 1 1 2
87.0 2 1 1 2
85.5 4 3 1 6
84.0 7 5 3
82.5 2 2 1 3
81.0 1 2 1 2
79.5 1 2 1 1 1
78.0 5 3 3 5
76.5 11 3 8 7
75.0 10 2 1 5 7
73.5 3 7 1 5 6
72.0 3 3 1 2 3 2
70.5 3 7 1 2 8 1
69.0 2 5 7 3 2
67.5 9 11 14 8 1
66.0 4 4 3 7
64.5 9 6 2 7 7 1
63.0 7 13 10 14
61.5 3 9 4 9
60.0 7 5 2 10 1 1
58.5 3 10 6 7 2
57.0 4 6 1 5 5
55.5 1 4 4 2 1
54.0 9 2 6 2
52.5 2 6 1 5 3
51.0 1 5 5 1 1
49.5 1 2 1 4
48.0 3 4 2 2 2 1
46.5 1 1 1 1
45.0 2 2 1
43.5 1 1
42.0 2 1 1 1
40.5 1 1
39.0 1 1
36.0 2 1 1 3 1
34.5 1 1 1 1
30.0 1 2 2 1
18.0 1 1
American Mathematics Competitions
2009 AMC 12 A Results for Delaware
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 93.41* 5.09 0.00 0.00 1.20 0.30 0.00
2 0.30 2.99 94.01* 0.90 1.50 0.30 0.00
3 5.09 80.54* 2.10 8.08 1.80 2.40 0.00
4 95.51* 0.60 1.20 0.30 1.80 0.60 0.00
5 0.90 0.60 1.80 88.92* 0.90 6.89 0.00
6 25.15 3.59 4.19 12.87 31.44* 22.75 0.00
7 2.40 24.55* 5.99 2.40 3.89 60.48 0.30
8 63.47* 1.20 3.89 4.49 8.08 18.86 0.00
9 1.80 2.99 3.59 36.23* 5.39 50.00 0.00
10 2.99 6.29 38.92* 10.18 8.08 33.53 0.00
11 1.50 3.59 2.99 8.08 67.37* 16.47 0.00
12 16.77 26.65* 4.79 7.78 2.40 41.62 0.00
13 12.87 8.68 11.38 18.26* 8.08 40.72 0.00
14 5.09 5.09* 9.28 9.88 6.89 63.77 0.00
15 10.78 5.69 6.29 18.26* 4.49 54.49 0.00
16 13.17 5.99 7.78 5.69* 3.29 64.07 0.00
17 5.09 2.99 7.78* 5.99 9.28 68.86 0.00
18 12.28 5.69* 5.99 2.69 2.10 71.26 0.00
19 7.78 7.19 5.09* 7.78 10.78 61.38 0.00
20 2.99 2.40 6.89 5.09 11.98* 70.66 0.00
21 3.89 3.89 5.09* 1.50 5.09 80.54 0.00
22 1.80 5.69 4.49 4.79 2.99* 80.24 0.00
23 2.10 2.10 2.10 3.29* 1.20 89.22 0.00
24 7.49 5.09 3.89 1.80 0.30* 81.44 0.00
25 2.69* 4.19 5.69 4.49 6.59 76.35 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 10 B Results for Delaware
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
111.0 1 1
64.5 1 1 2
57.0 2 2
55.5 1 1
52.5 2 2
51.0 4 4
49.5 1 1 2
48.0 2 1 4
45.0 1 1 2
42.0 1 1
40.5 3 3
37.5 3 1 4
36.0 1 1
34.5 1 2
28.5 1 1
American Mathematics Competitions
2009 AMC 10 B Results for Delaware
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 62.50* 9.38 21.88 3.13 3.13 0.00
2 3.13 12.50 46.88* 3.13 3.13 31.25 0.00
3 0.00 9.38 75.00* 12.50 0.00 3.13 0.00
4 0.00 6.25 46.88* 6.25 3.13 34.38 3.13
5 15.63 3.13 25.00 28.13* 9.38 15.63 3.13
6 0.00 3.13 9.38 43.75* 0.00 43.75 0.00
7 21.88 12.50 28.13* 15.63 3.13 18.75 0.00
8 6.25 3.13* 6.25 53.13 0.00 31.25 0.00
9 9.38* 3.13 6.25 3.13 0.00 78.13 0.00
10 15.63 3.13 12.50 0.00 9.38* 59.38 0.00
11 43.75* 9.38 3.13 3.13 0.00 40.63 0.00
12 12.50* 9.38 12.50 18.75 3.13 43.75 0.00
13 0.00 12.50 15.63* 15.63 15.63 40.63 0.00
14 6.25 25.00 28.13 15.63* 12.50 12.50 0.00
15 12.50 12.50 3.13 18.75 15.63* 37.50 0.00
16 0.00 0.00* 3.13 0.00 0.00 96.88 0.00
17 18.75 21.88 6.25* 3.13 0.00 50.00 0.00
18 0.00 0.00 9.38 6.25* 3.13 81.25 0.00
19 9.38* 18.75 18.75 12.50 6.25 34.38 0.00
20 9.38 6.25* 3.13 3.13 9.38 68.75 0.00
21 12.50 3.13 0.00 9.38* 0.00 75.00 0.00
22 0.00 0.00* 0.00 0.00 3.13 96.88 0.00
23 0.00 12.50 3.13* 15.63 3.13 65.63 0.00
24 6.25* 6.25 0.00 0.00 6.25 81.25 0.00
25 15.63 3.13* 21.88 3.13 3.13 53.13 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 Delaware
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
121.5 1
112.5 1 1
109.5 1
93.0 1 1
84.0 1 1 1 1
81.0 1
79.5 1 1 2
78.0 1 1
75.0 1 1 1
73.5 2 2
69.0 1 1 2
67.5 1 1
66.0 2 1 2
64.5 1 1 1
63.0 1 1
61.5 1 1
58.5 1 1
57.0 1 1
54.0 1 1
51.0 1 1 1 1
49.5 1
45.0 1 1
43.5 1 1
37.5 1 1 1
American Mathematics Competitions
2009 AMC 12 B Results for Delaware
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 85.29* 2.94 8.82 2.94 0.00 0.00
2 0.00 5.88 85.29* 5.88 0.00 2.94 0.00
3 2.94 2.94 20.59 58.82* 0.00 14.71 0.00
4 0.00 0.00 88.24* 5.88 0.00 5.88 0.00
5 0.00 0.00 2.94 76.47* 5.88 14.71 0.00
6 8.82 17.65 64.71* 2.94 5.88 0.00 0.00
7 0.00 50.00* 2.94 29.41 5.88 11.76 0.00
8 2.94 2.94 2.94 0.00 67.65* 23.53 0.00
9 32.35* 2.94 2.94 0.00 0.00 61.76 0.00
10 41.18* 11.76 11.76 2.94 0.00 32.35 0.00
11 2.94 32.35 17.65 8.82* 2.94 35.29 0.00
12 0.00 0.00 2.94 0.00 23.53* 73.53 0.00
13 0.00 0.00 0.00 20.59* 2.94 76.47 0.00
14 11.76 5.88 38.24* 0.00 0.00 44.12 0.00
15 2.94 44.12* 0.00 2.94 2.94 47.06 0.00
16 0.00 0.00* 0.00 0.00 0.00 100.00 0.00
17 11.76 23.53* 5.88 0.00 11.76 47.06 0.00
18 5.88 11.76 17.65* 0.00 0.00 64.71 0.00
19 0.00 0.00 0.00 0.00 0.00* 100.00 0.00
20 0.00 2.94 5.88* 0.00 2.94 88.24 0.00
21 2.94* 5.88 2.94 0.00 23.53 64.71 0.00
22 0.00 0.00 0.00* 0.00 0.00 100.00 0.00
23 0.00 0.00 2.94 0.00* 0.00 97.06 0.00
24 2.94 0.00* 2.94 8.82 0.00 85.29 0.00
25 0.00 0.00 0.00 2.94 0.00* 97.06 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column