American Mathematics Competitions
2011 AMC 10 A Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 755
Number of unofficial participants: 18
Average score of participants: 57.4
Average score for female students is: 54.1 ( 297 Students)
Average score for male students is: 61.3 ( 306 Students)
Average score for unspecified gender is 56.3 ( 152 Students)
Average score for grade 10 is: 59.4 ( 346 Students)
Average score for grade 9 is: 55.5 ( 284 Students)
Average score for grade 8 and below is: 65.7 ( 28 Students)
Average score with unknown grade: 53.8 ( 97 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 8
Number of schools returning results 37
Average school winning score 88.50
American Mathematics Competitions
2011 AMC 12 A Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 991
Number of unofficial participants: 20
Average score of participants: 58.6
Average score for female students is: 55.3 ( 412 Students)
Average score for male students is: 61.4 ( 471 Students)
Average score for unspecified gender is 59.2 ( 108 Students)
Average score for grade 13 is: 48.0 ( 2 Students)
Average score for grade 12 is: 61.8 ( 375 Students)
Average score for grade 11 is: 57.2 ( 426 Students)
Average score for grade 10 is: 56.7 ( 99 Students)
Average score for grade 9 is: 53.0 ( 33 Students)
Average score for grade 8 and below is: 49.5 ( 11 Students)
Average score with unknown grade: 56.0 ( 45 Students)
AIME qualifying score = 93.0 or better
Number of AIME qualifers 18
Number of schools returning results 41
Average school winning score 83.93
Average school team score 226.61
American Mathematics Competitions
2011 AMC 10 B Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 222
Number of unofficial participants: 0
Average score of participants: 51.1
Average score for female students is: 47.2 ( 132 Students)
Average score for male students is: 58.1 ( 69 Students)
Average score for unspecified gender is 52.2 ( 21 Students)
Average score for grade 10 is: 52.5 ( 108 Students)
Average score for grade 9 is: 48.7 ( 102 Students)
Average score for grade 8 and below is: 99.0 ( 3 Students)
Average score with unknown grade: 44.5 ( 9 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 1
Number of schools returning results 14
Average school winning score 80.68
American Mathematics Competitions
2011 AMC 12 B Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 278
Number of unofficial participants: 0
Average score of participants: 53.1
Average score for female students is: 48.4 ( 105 Students)
Average score for male students is: 59.1 ( 123 Students)
Average score for unspecified gender is 48.4 ( 50 Students)
Average score for grade 12 is: 61.5 ( 96 Students)
Average score for grade 11 is: 50.5 ( 103 Students)
Average score for grade 10 is: 48.7 ( 17 Students)
Average score for grade 9 is: 47.4 ( 33 Students)
Average score with unknown grade: 43.8 ( 29 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 7
Number of schools returning results 18
Average school winning score 79.83
Average school team score 209.42
2011 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
315.0 1 1
304.5 1 2
303.0 1 3
297.0 1 4
294.0 1 5
292.5 1 1 6
289.5 2 8
268.5 1 10
265.5 1 11
259.5 2 12
256.5 2 14
252.0 1 16
250.5 1 17
240.0 1 18
231.0 1 19
229.5 2 1 20
228.0 2 23
222.0 2 25
220.5 2 27
219.0 3 2 29
217.5 2 34
216.0 1 1 36
214.5 1 38
211.5 2 39
210.0 1 41
208.5 1 42
204.0 1 43
196.5 1 44
192.0 1 1 45
187.5 1 47
184.5 1 48
178.5 1 1 49
177.0 1 51
172.5 1 52
171.0 1 53
169.5 1 54
166.5 1 55
156.0 1 56
144.0 1 57
66.0 1 58
2011 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
124.5 1
123.0 2
121.5 2 1
120.0 2
118.5 1
117.0 1 1 1
115.5 2
114.0 2
112.5 1
111.0 2 1 2
108.0 1 1 1
105.0 7
103.5 1 3
102.0 3 1 1 1
100.5 4 1 3 1
99.0 2 3 3 2
97.5 7
96.0 2 2 7 2
94.5 6
93.0 2 1 2
91.5 4 1 5
90.0 2 4 2 2
88.5 2 2 2 3
87.0 6 1 6
85.5 7 6 2
84.0 9 2 14 2
82.5 7 3 10
81.0 5 2 8 2
79.5 8 2 7 1
78.0 11 7 10 2
76.5 20 4 10 3
75.0 13 1 5 1
73.5 16 4 10 2
72.0 30 4 14 1
70.5 24 4 8 1
69.0 22 2 14 2
67.5 48 4 16 3
66.0 44 3 20 1
64.5 31 7 9 3
63.0 49 3 22 2
61.5 41 4 27 7
60.0 44 12 20 7
58.5 44 6 30 7
57.0 43 5 19 6
55.5 41 7 21 11
54.0 46 9 29 5
52.5 39 15 21 5
51.0 44 9 19 7
49.5 26 10 37 5
48.0 42 12 35 12
46.5 33 12 14 6
45.0 31 14 20 12
43.5 25 9 22 9
42.0 37 13 29 12
40.5 15 6 27 8
39.0 10 6 24 5
37.5 11 6 17 5
36.0 14 12 15 5
34.5 2 6 5 5
33.0 4 8 11 4
31.5 4 5 13 5
30.0 10 8 18 10
28.5 3 6 4 5
27.0 1 5 2
25.5 1 3 2
24.0 2 2 8 6
22.5 1 2 2
21.0 1 2 1
19.5 2 1
18.0 2 2 2
16.5 1
15.0 1 1
12.0 1 1 1
American Mathematics Competitions
2011 AMC 10 A Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 10 A Results for Nebraska
Analysis
Table of Item Difficulty for the 2011
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.79 1.06 15.89 78.81* 2.65 0.79 0.00
2 0.13 0.79 1.72 12.45 84.77* 0.13 0.00
3 1.85 3.97 8.48 40.53* 3.31 41.85 0.00
4 42.25* 8.34 8.08 5.17 4.11 32.05 0.00
5 5.70 21.85 37.88* 4.77 1.72 28.08 0.00
6 13.91 7.28 21.99* 19.07 5.30 32.45 0.00
7 7.55 25.56* 50.33 1.46 2.52 12.58 0.00
8 4.50 27.81 46.09* 3.31 2.91 15.36 0.00
9 22.52* 8.08 5.70 4.64 3.97 54.83 0.26
10 5.70 18.41* 7.55 12.58 13.25 42.52 0.00
11 7.95 12.05* 7.81 6.75 3.58 61.72 0.13
12 66.62* 2.65 3.18 8.21 2.65 16.69 0.00
13 20.26* 10.86 11.39 10.33 4.64 42.52 0.00
14 11.92 19.74* 12.58 2.52 4.37 48.87 0.00
15 7.42 7.95 21.46* 4.90 1.85 56.42 0.00
16 17.09 5.83* 3.44 3.58 18.81 51.26 0.00
17 1.99 3.97 60.66* 3.44 1.59 28.34 0.00
18 4.90 4.24 5.83* 12.98 6.36 65.70 0.00
19 5.56 7.28 7.15 3.58 6.89* 69.54 0.00
20 8.21 3.58 9.01 5.30* 12.72 61.19 0.00
21 6.62 6.75 9.54 5.96* 6.49 64.64 0.00
22 4.77 8.21 6.62* 5.83 7.02 67.55 0.00
23 6.75 5.96 13.91* 7.81 10.46 55.10 0.00
24 1.72 3.31 3.84 3.05* 2.25 85.83 0.00
25 2.38 3.44 4.24* 3.05 2.52 84.37 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
2011 AMC 12 A Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 12 A Results for Nebraska
Analysis
Table of Item Difficulty for the 2011
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.20 0.40 13.72 82.14* 2.93 0.61 0.00
2 0.00 0.00 1.01 0.40 98.28* 0.30 0.00
3 0.50 0.91 1.41 12.82 83.96* 0.40 0.00
4 5.25 19.37 50.45* 4.94 1.21 18.77 0.00
5 4.94 24.72 51.56* 2.12 2.52 14.13 0.00
6 71.85* 1.31 4.34 5.75 2.52 14.23 0.00
7 4.74 20.89* 6.56 13.02 9.49 45.31 0.00
8 1.41 2.83 67.31* 1.82 1.31 25.33 0.00
9 6.66 14.03* 7.77 7.97 33.30 30.27 0.00
10 11.71 26.14* 11.50 4.04 2.22 44.40 0.00
11 4.44 4.14 10.90* 15.64 7.97 56.91 0.00
12 5.95 5.35 5.25 16.55* 26.34 40.57 0.00
13 37.34 5.05* 3.43 8.38 3.53 42.28 0.00
14 2.22 5.45 6.16 4.84 3.83* 77.50 0.00
15 6.36* 2.93 13.52 3.94 2.32 70.94 0.00
16 4.34 7.67 7.06* 5.25 6.76 68.92 0.00
17 3.03 3.94 6.16 5.95* 4.44 76.49 0.00
18 5.35 6.56 8.38 17.46* 2.42 59.84 0.00
19 4.14 4.04 5.55* 3.43 1.21 81.63 0.00
20 7.16 9.79 4.54* 3.43 2.72 72.35 0.00
21 1.61* 3.03 4.24 3.83 1.11 86.18 0.00
22 2.83 4.64 3.33* 3.94 1.21 83.96 0.10
23 2.52 3.23 5.75* 3.83 2.22 82.24 0.20
24 4.64 7.67 4.84* 3.83 9.08 69.93 0.00
25 5.55 4.64 4.74 3.23* 13.72 68.01 0.10
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
American Mathematics Competitions
2011 AMC 10 B Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 10 B Results for Nebraska
Analysis
Table of Item Difficulty for the 2011
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 20.27 2.70 69.37* 1.35 0.90 5.41 0.00
2 12.16 1.80 6.76 5.86 68.47* 4.50 0.45
3 59.01* 9.01 4.95 14.86 0.90 11.26 0.00
4 12.61 4.95 36.49* 41.44 0.45 4.05 0.00
5 13.06 4.05 2.25 3.15 38.29* 39.19 0.00
6 54.95* 6.76 13.06 3.15 3.15 18.47 0.45
7 27.93 28.83* 8.11 5.86 9.01 20.27 0.00
8 36.49 57.21* 0.45 0.45 4.05 1.35 0.00
9 13.96 3.15 5.86 14.41* 4.95 57.66 0.00
10 9.91 21.62* 16.22 9.01 10.81 32.43 0.00
11 7.66 4.05 52.25 13.06* 5.86 17.12 0.00
12 9.46* 14.86 2.70 5.41 1.80 65.77 0.00
13 10.81 34.23 5.86 9.01* 9.46 30.63 0.00
14 12.16 7.66 20.27* 6.31 4.05 49.55 0.00
15 13.06 6.31 6.76 15.32 20.27* 38.29 0.00
16 9.01* 15.77 5.86 6.76 0.45 62.16 0.00
17 7.66 4.05 13.51* 13.06 9.91 51.80 0.00
18 0.45 9.01 28.38 21.62 8.11* 32.43 0.00
19 9.46* 9.91 4.05 8.11 3.60 64.86 0.00
20 5.41 8.56 9.01* 1.35 4.05 71.62 0.00
21 9.91 9.01* 8.11 3.60 3.15 66.22 0.00
22 4.95* 5.41 4.05 3.60 4.05 77.93 0.00
23 39.64 7.21 5.86 4.95* 2.25 40.09 0.00
24 3.60 4.50* 5.86 4.05 5.41 76.58 0.00
25 2.25 3.15 5.41 1.35* 0.90 86.94 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
2011 AMC 12 B Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 12 B Results for Nebraska
Analysis
Table of Item Difficulty for the 2011
American Mathematics Competitions 10/12
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 9.71 2.88 85.25* 0.36 0.00 1.80 0.00
2 11.87 1.80 5.40 6.47 71.94* 2.52 0.00
3 7.55 4.68 54.32* 29.86 0.36 3.24 0.00
4 10.79 4.32 2.52 4.32 50.72* 27.34 0.00
5 42.09* 3.24 3.24 27.70 10.43 13.31 0.00
6 1.08 5.76 26.98* 6.83 15.83 43.17 0.36
7 8.99 42.09* 2.88 10.79 5.04 30.22 0.00
8 24.82* 14.03 2.16 5.40 1.08 52.52 0.00
9 10.07 24.46 6.12 26.26* 9.71 23.38 0.00
10 1.08 6.83 25.90 23.38 15.47* 26.98 0.36
11 13.67 25.18* 9.71 10.79 4.68 35.97 0.00
12 17.99* 9.35 8.99 8.99 1.80 52.88 0.00
13 9.71 10.79* 7.55 5.76 1.80 64.39 0.00
14 2.52 4.32 2.88 4.32* 5.76 80.22 0.00
15 11.51 10.07 7.91 11.51* 4.68 54.32 0.00
16 3.24 13.31 15.47* 4.32 3.60 60.07 0.00
17 1.80 5.04* 6.12 4.68 4.32 78.06 0.00
18 5.04* 4.68 5.04 4.32 5.40 75.54 0.00
19 4.32 3.96* 5.76 8.63 6.12 71.22 0.00
20 4.68 5.04 3.96* 3.60 2.16 80.58 0.00
21 3.60 6.47 5.76 5.04* 1.80 77.34 0.00
22 4.32 2.88 3.60 1.80* 1.80 85.61 0.00
23 4.68 5.04 9.71* 5.76 3.96 70.86 0.00
24 2.88 2.88* 4.68 2.16 2.88 84.53 0.00
25 4.32 4.32 4.32 3.24* 2.88 80.94 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
