American Mathematics Competitions
2009 AMC 10 A Results for South Dakota
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 166
Number of unofficial participants: 0
Average score of participants: 58.1
Average score for female students is: 53.9 ( 76 Students)
Average score for male students is: 63.2 ( 73 Students)
Average score for unspecified gender is 55.1 ( 17 Students)
Average score for grade 10 is: 61.0 ( 66 Students)
Average score for grade 9 is: 56.9 ( 88 Students)
Average score for grade 8 and below is: 60.8 ( 2 Students)
Average score with unknown grade: 48.8 ( 10 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 7
Average school winning score 84.21
American Mathematics Competitions
2009 AMC 12 A Results for South Dakota
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 120
Number of unofficial participants: 0
Average score of participants: 58.0
Average score for female students is: 54.7 ( 46 Students)
Average score for male students is: 61.0 ( 66 Students)
Average score for unspecified gender is 52.5 ( 8 Students)
Average score for grade 12 is: 57.5 ( 51 Students)
Average score for grade 11 is: 58.4 ( 64 Students)
Average score for grade 10 is: 71.3 ( 2 Students)
Average score with unknown grade: 50.5 ( 3 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 0
Number of schools returning results 7
Average school winning score 78.86
Average school team score 219.86
American Mathematics Competitions
2009 AMC 10 B Results for South Dakota
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 101
Number of unofficial participants: 0
Average score of participants: 60.3
Average score for female students is: 54.2 ( 41 Students)
Average score for male students is: 62.9 ( 53 Students)
Average score for unspecified gender is 76.5 ( 7 Students)
Average score for grade 10 is: 60.0 ( 48 Students)
Average score for grade 9 is: 57.7 ( 41 Students)
Average score for grade 8 and below is: 63.9 ( 8 Students)
Average score with unknown grade: 84.0 ( 4 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 2
Number of schools returning results 4
Average school winning score 101.63
American Mathematics Competitions
2009 AMC 12 B Results for South Dakota
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 110
Number of unofficial participants: 0
Average score of participants: 53.8
Average score for female students is: 49.0 ( 35 Students)
Average score for male students is: 57.3 ( 60 Students)
Average score for unspecified gender is 51.2 ( 15 Students)
Average score for grade 12 is: 56.3 ( 55 Students)
Average score for grade 11 is: 50.5 ( 54 Students)
Average score for grade 9 is: 100.5 ( 1 Student)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 1
Number of schools returning results 4
Average school winning score 90.00
Average school team score 237.75
2009 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
279.0 1 1
261.0 1 2
253.5 1 3
243.0 1 4
241.5 1 5
235.5 1 6
210.0 1 7
205.5 1 8
201.0 1 9
192.0 1 10
168.0 1 11
2009 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
121.5 1
120.0 1
117.0 1 1
114.0 1
100.5 1 1
99.0 1
97.5 1
96.0 1 1
94.5 1 1 1 3
93.0 1 1
91.5 3
90.0 1 1 1
88.5 1 5
87.0 1
85.5 1
84.0 1 4
82.5 1 1 1 1
81.0 1 1 1 2
79.5 1 2 2
78.0 4 1 4 2
76.5 2 3 1 2
75.0 2 3 2
73.5 2 4 2
72.0 3 2 8 1
70.5 3 3 2 2
69.0 4 2 1 3
67.5 4 3 8 1
66.0 3 5 3
64.5 5 1 4 3
63.0 5 1 5 2
61.5 3 2 4 2
60.0 9 1 4 8
58.5 3 11 2
57.0 6 5 2 3
55.5 10 5 4 1
54.0 7 5 6 4
52.5 5 8 5 5
51.0 3 8 6
49.5 6 7 8 4
48.0 7 7 9 7
46.5 1 4 3
45.0 2 1 9 2
43.5 4 9 5 1
42.0 3 5 4 1
40.5 2 2 2
39.0 1 3 2 1
37.5 2 2 2 3
36.0 2 1 4 1
34.5 2 2 1
33.0 1 3 1
31.5 2 2 2
30.0 1 1 1
28.5 1 1
27.0 1
25.5 1 1
24.0 1 3
22.5 1
21.0 1 1 3
19.5 1
18.0 1
6.0 2
American Mathematics Competitions
2009 AMC 10 A Results for South Dakota
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 10 A Results for South Dakota
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 1.20 0.00 0.60 16.27 80.72* 1.20 0.00
2 94.58* 1.20 0.00 1.20 1.20 1.81 0.00
3 7.23 12.05 48.80* 6.63 4.82 20.48 0.00
4 18.67* 10.24 7.83 7.23 15.66 40.36 0.00
5 9.64 6.63 7.23 1.20 40.36* 34.94 0.00
6 38.55* 2.41 13.86 4.82 1.20 39.16 0.00
7 7.23 6.02 19.88* 4.82 41.57 20.48 0.00
8 10.84 69.88* 3.01 1.20 3.01 12.05 0.00
9 7.83 15.66* 5.42 5.42 1.81 63.86 0.00
10 4.22 21.08* 4.22 13.86 0.60 56.02 0.00
11 1.81 3.01 4.22 45.18* 2.41 43.37 0.00
12 1.20 10.84 20.48* 7.83 7.83 51.81 0.00
13 15.06 4.22 1.81 21.69 9.04* 48.19 0.00
14 27.11* 1.20 7.23 4.82 19.28 40.36 0.00
15 7.83 5.42 4.82 5.42 43.37* 33.13 0.00
16 30.12 2.41 2.41 7.23* 6.63 51.20 0.00
17 4.82 6.63 4.82* 1.20 6.63 75.90 0.00
18 24.10 7.23 11.45 15.06* 7.23 34.94 0.00
19 4.82 10.84* 6.02 7.23 1.81 69.28 0.00
20 11.45 10.24 10.84 25.30* 1.20 40.96 0.00
21 1.81 1.20 12.65* 1.20 3.01 80.12 0.00
22 6.02 6.02 36.75 4.82* 5.42 40.96 0.00
23 4.82 1.81 6.63 6.02 13.25* 67.47 0.00
24 10.84 17.47 2.41* 4.22 7.23 57.83 0.00
25 5.42 3.61* 9.04 2.41 7.23 72.29 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 South Dakota
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 12 A Results for South Dakota
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 80.00* 11.67 0.83 0.00 3.33 4.17 0.00
2 0.83 10.83 75.00* 5.83 1.67 5.83 0.00
3 10.00 73.33* 3.33 7.50 2.50 3.33 0.00
4 94.17* 0.83 0.00 1.67 1.67 1.67 0.00
5 0.83 2.50 1.67 68.33* 4.17 22.50 0.00
6 21.67 4.17 7.50 19.17 21.67* 25.83 0.00
7 0.83 15.83* 5.83 5.83 0.83 70.83 0.00
8 40.83* 3.33 10.00 5.00 16.67 24.17 0.00
9 3.33 8.33 3.33 15.00* 6.67 62.50 0.83
10 5.00 3.33 26.67* 15.00 6.67 43.33 0.00
11 1.67 3.33 6.67 5.83 65.00* 17.50 0.00
12 14.17 13.33* 14.17 6.67 5.83 45.83 0.00
13 13.33 10.83 12.50 10.83* 7.50 45.00 0.00
14 2.50 6.67* 12.50 10.83 6.67 60.83 0.00
15 10.00 8.33 10.00 15.00* 3.33 53.33 0.00
16 15.83 11.67 10.83 2.50* 3.33 55.83 0.00
17 3.33 5.83 8.33* 7.50 10.83 64.17 0.00
18 10.83 6.67* 6.67 3.33 3.33 69.17 0.00
19 7.50 18.33 6.67* 7.50 6.67 53.33 0.00
20 4.17 5.83 8.33 4.17 11.67* 65.83 0.00
21 6.67 5.00 7.50* 4.17 5.83 70.83 0.00
22 3.33 5.00 5.83 7.50 0.83* 77.50 0.00
23 2.50 4.17 3.33 5.83* 1.67 82.50 0.00
24 13.33 6.67 3.33 4.17 0.83* 71.67 0.00
25 3.33* 5.83 6.67 5.83 10.83 67.50 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 South Dakota
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 10 B Results for South Dakota
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 1.98 69.31* 6.93 17.82 2.97 0.99 0.00
2 7.92 1.98 76.24* 0.99 0.00 12.87 0.00
3 2.97 1.98 71.29* 10.89 4.95 7.92 0.00
4 3.96 1.98 64.36* 11.88 3.96 13.86 0.00
5 12.87 4.95 19.80 42.57* 1.98 17.82 0.00
6 3.96 0.99 6.93 64.36* 5.94 17.82 0.00
7 18.81 10.89 53.47* 8.91 3.96 3.96 0.00
8 2.97 17.82* 16.83 47.52 1.98 12.87 0.00
9 21.78* 7.92 4.95 11.88 3.96 49.50 0.00
10 16.83 0.99 6.93 7.92 22.77* 44.55 0.00
11 52.48* 8.91 3.96 5.94 3.96 24.75 0.00
12 14.85* 14.85 3.96 18.81 5.94 41.58 0.00
13 1.98 10.89 36.63* 10.89 15.84 23.76 0.00
14 3.96 24.75 22.77 14.85* 9.90 23.76 0.00
15 13.86 8.91 3.96 6.93 37.62* 28.71 0.00
16 4.95 10.89* 4.95 2.97 4.95 71.29 0.00
17 25.74 12.87 14.85* 1.98 0.99 43.56 0.00
18 6.93 3.96 5.94 6.93* 3.96 72.28 0.00
19 23.76* 12.87 11.88 12.87 2.97 35.64 0.00
20 11.88 6.93* 4.95 0.00 9.90 66.34 0.00
21 5.94 8.91 2.97 8.91* 4.95 68.32 0.00
22 3.96 1.98* 6.93 3.96 0.99 82.18 0.00
23 8.91 6.93 10.89* 12.87 5.94 54.46 0.00
24 14.85* 3.96 6.93 7.92 5.94 60.40 0.00
25 13.86 14.85* 14.85 7.92 7.92 40.59 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 B Results for South Dakota
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2009 AMC 12 B Results for South Dakota
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 75.45* 8.18 13.64 1.82 0.91 0.00
2 2.73 5.45 72.73* 10.91 3.64 4.55 0.00
3 14.55 7.27 22.73 41.82* 1.82 11.82 0.00
4 5.45 4.55 64.55* 18.18 3.64 3.64 0.00
5 0.91 4.55 14.55 65.45* 3.64 10.91 0.00
6 15.45 19.09 44.55* 10.91 5.45 4.55 0.00
7 7.27 23.64* 11.82 40.91 9.09 7.27 0.00
8 14.55 10.91 2.73 6.36 50.91* 14.55 0.00
9 38.18* 5.45 4.55 11.82 3.64 36.36 0.00
10 24.55* 24.55 9.09 10.00 7.27 24.55 0.00
11 5.45 34.55 20.91 15.45* 6.36 17.27 0.00
12 3.64 2.73 10.00 5.45 15.45* 62.73 0.00
13 1.82 7.27 10.91 10.00* 2.73 67.27 0.00
14 24.55 19.09 14.55* 3.64 1.82 36.36 0.00
15 0.91 31.82* 18.18 6.36 7.27 35.45 0.00
16 10.00 5.45* 3.64 0.91 2.73 77.27 0.00
17 28.18 15.45* 13.64 3.64 7.27 31.82 0.00
18 7.27 11.82 15.45* 15.45 6.36 43.64 0.00
19 3.64 5.45 10.00 3.64 4.55* 72.73 0.00
20 5.45 7.27 6.36* 0.00 11.82 69.09 0.00
21 1.82* 15.45 5.45 14.55 30.00 32.73 0.00
22 4.55 4.55 5.45* 10.91 2.73 71.82 0.00
23 6.36 8.18 6.36 5.45* 3.64 70.00 0.00
24 12.73 7.27* 4.55 6.36 0.91 68.18 0.00
25 8.18 3.64 8.18 5.45 4.55* 70.00 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
