American Mathematics Competitions
2008 AMC 10 A Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 1229
Number of unofficial participants: 0
Average score of participants: 46.7
Average score for female students is: 43.5 ( 518 Students)
Average score for male students is: 49.1 ( 581 Students)
Average score for unspecified gender is 48.5 ( 130 Students)
Average score for grade 10 is: 46.1 ( 625 Students)
Average score for grade 9 is: 46.2 ( 490 Students)
Average score for grade 8 and below is: 57.6 ( 37 Students)
Average score with unknown grade: 49.2 ( 77 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 3
Number of schools returning results 46
Average school winning score 73.89
American Mathematics Competitions
2008 AMC 12 A Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 1803
Number of unofficial participants: 0
Average score of participants: 54.2
Average score for female students is: 50.8 ( 753 Students)
Average score for male students is: 56.5 ( 871 Students)
Average score for unspecified gender is 57.4 ( 179 Students)
Average score for grade 13 is: 50.3 ( 2 Students)
Average score for grade 12 is: 55.9 ( 641 Students)
Average score for grade 11 is: 53.6 ( 861 Students)
Average score for grade 10 is: 52.5 ( 106 Students)
Average score for grade 9 is: 50.1 ( 100 Students)
Average score for grade 8 and below is: 60.0 ( 5 Students)
Average score with unknown grade: 55.2 ( 88 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 36
Number of schools returning results 53
Average school winning score 83.69
Average school team score 234.57
American Mathematics Competitions
2008 AMC 10 B Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 265
Number of unofficial participants: 0
Average score of participants: 53.8
Average score for female students is: 52.5 ( 150 Students)
Average score for male students is: 55.3 ( 105 Students)
Average score for unspecified gender is 56.1 ( 10 Students)
Average score for grade 10 is: 53.6 ( 122 Students)
Average score for grade 9 is: 53.6 ( 142 Students)
Average score with unknown grade: 82.5 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 10
Average school winning score 80.70
American Mathematics Competitions
2008 AMC 12 B Results for Nebraska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 330
Number of unofficial participants: 0
Average score of participants: 58.1
Average score for female students is: 55.7 ( 148 Students)
Average score for male students is: 59.8 ( 169 Students)
Average score for unspecified gender is 64.4 ( 13 Students)
Average score for grade 12 is: 56.5 ( 151 Students)
Average score for grade 11 is: 57.7 ( 152 Students)
Average score for grade 10 is: 75.3 ( 11 Students)
Average score for grade 9 is: 66.8 ( 14 Students)
Average score with unknown grade: 63.8 ( 2 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 12
Number of schools returning results 13
Average school winning score 82.85
Average school team score 232.38
2008 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
363.0 1 1
343.5 1 2
316.5 1 3
310.5 1 4
307.5 1 5
306.0 2 1 6
304.5 1 9
297.0 1 10
292.5 1 11
277.5 1 12
271.5 1 13
267.0 1 14
265.5 1 15
264.0 1 16
262.5 1 17
259.5 1 18
258.0 1 19
256.5 1 20
247.5 1 21
244.5 1 22
241.5 1 23
240.0 2 24
237.0 1 26
234.0 3 27
231.0 1 30
229.5 1 31
226.5 1 32
222.0 2 33
220.5 2 1 35
219.0 2 38
217.5 1 1 40
214.5 1 42
213.0 1 43
211.5 1 1 44
208.5 1 46
207.0 3 47
205.5 1 1 50
201.0 2 52
199.5 1 54
198.0 2 55
196.5 1 57
192.0 1 58
186.0 1 59
184.5 1 60
169.5 1 61
162.0 3 62
150.0 1 65
147.0 1 66
2008 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
133.5 1
126.0 1
123.0 1
120.0 2 1
118.5 3
117.0 1
114.0 1 1
112.5 1
109.5 1 2
108.0 2 1 1
106.5 1
105.0 1
103.5 7
102.0 3 2
100.5 8 3 2 1
99.0 2 3 2
97.5 5 1 1
96.0 4 2
94.5 8 3
93.0 3 1 1
91.5 2 6
90.0 7 2
88.5 13 3 2 1
87.0 7 3 1
85.5 4 2 4
84.0 10 4 2 2
82.5 14 5 2 6
81.0 13 5
79.5 11 2 5 2
78.0 15 3 2 5
76.5 36 8 5 2
75.0 19 7 10 1
73.5 16 4 5 3
72.0 27 13 10 4
70.5 30 5 7 2
69.0 34 3 11 7
67.5 35 14 14 8
66.0 43 11 12 8
64.5 43 10 17 5
63.0 50 14 19 8
61.5 39 9 22 8
60.0 59 24 36 12
58.5 66 12 28 11
57.0 61 10 18 4
55.5 70 8 34 8
54.0 84 15 38 16
52.5 60 10 41 6
51.0 68 16 41 14
49.5 80 8 44 8
48.0 102 13 62 14
46.5 67 9 51 8
45.0 78 9 42 15
43.5 64 3 63 6
42.0 92 10 68 9
40.5 43 4 54 7
39.0 42 10 61 4
37.5 47 5 59 3
36.0 45 2 71 9
34.5 26 4 47 10
33.0 24 5 39 2
31.5 21 2 34 2
30.0 25 8 39 3
28.5 19 1 20 4
27.0 7 2 12 2
25.5 3 2 10 2
24.0 7 5 14 1
22.5 5 5 1
21.0 1 6 1
19.5 2 3 1
18.0 9 1 5 1
16.5 1 3
15.0 1 3
13.5 2 1
12.0 2 1
7.5 1 1
American Mathematics Competitions
2008 AMC 10 A Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
133.5 1 1
126.0 1 1
117.0 1 1
112.5 1 1
108.0 1
102.0 2 2
100.5 1 1 1 1
99.0 2 1 1
97.5 1 1
96.0 1 1 1
93.0 1
91.5 4 1 3 2 1
90.0 1 1 2
88.5 1 1 1 1
87.0 1 2 1
84.0 1 1 1
82.5 2 1 1
81.0 3 1 1 1 2 1
79.5 2 2 1 2 2
78.0 2 1 1
76.5 2 2 2 2 1
75.0 8 1 1 1 2 2 3 1
73.5 3 1 1 3 1
72.0 2 6 1 7 2
70.5 4 2 3 3 1
69.0 7 3 1 2 7 1
67.5 12 1 1 2 4 5 2
66.0 9 1 1 6 3 2
64.5 13 4 2 4 11
63.0 11 6 8 10 1
61.5 13 5 9 12 1
60.0 19 10 1 12 20 3
58.5 14 12 1 10 16 1
57.0 11 5 8 9 1
55.5 19 12 1 14 17 2
54.0 20 16 14 24
52.5 19 17 13 26 2
51.0 17 18 3 19 17 2
49.5 24 16 26 16 2
48.0 22 34 1 29 30 2
46.5 32 18 1 17 32 1
45.0 18 20 1 18 21 2
43.5 34 23 32 28 3
42.0 23 36 1 25 36 6
40.5 24 23 2 22 26 4
39.0 30 25 1 27 29 4
37.5 25 30 30 28 1
36.0 31 35 2 22 43 4
34.5 19 26 1 23 21 2
33.0 17 20 1 15 21 2
31.5 5 25 11 20 3
30.0 15 18 2 14 18 5
28.5 7 10 1 7 12
27.0 6 4 5 5 2
25.5 1 9 4 6
24.0 6 5 8 5 1
22.5 1 4 2 3
21.0 2 3 1 4 1
19.5 2 1 1 2
18.0 3 1 1 3 1
16.5 2 1 2
15.0 1 1 2 1
12.0 1 1
7.5 1 1
American Mathematics Competitions
2008 AMC 10 A Results for Nebraska
Analysis
Table of Item Difficulty for the 2008
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 2.12 0.65 10.66 77.79* 6.59 2.20 0.00
2 26.12* 20.59 32.14 2.12 0.73 18.23 0.08
3 49.72* 6.10 3.74 1.55 4.48 34.34 0.08
4 5.21 8.06 36.13* 10.50 8.46 31.65 0.00
5 7.32 20.67* 4.96 4.15 4.23 58.67 0.00
6 2.93 2.20 3.74 12.86* 47.68 30.59 0.00
7 49.39 3.50 4.72 3.01 5.70* 33.69 0.00
8 32.30* 8.62 3.74 19.28 3.74 32.30 0.00
9 5.70 17.33* 19.04 18.31 9.85 29.78 0.00
10 2.28 34.17 9.19 0.57 33.12* 20.67 0.00
11 5.45 5.53 9.11 49.47* 9.93 20.42 0.08
12 11.23 4.07 17.01* 8.38 4.80 54.52 0.00
13 15.30 28.40 7.57 16.76* 3.42 28.56 0.00
14 6.75 6.92 7.65 9.60* 5.53 63.55 0.00
15 3.58 3.17 31.24 18.88* 6.10 37.02 0.00
16 2.12 5.37* 4.15 16.19 6.92 65.26 0.00
17 7.40 4.39* 5.53 3.99 3.01 75.67 0.00
18 4.15 4.48* 4.96 3.66 4.07 78.68 0.00
19 3.17 5.78 5.70* 3.01 3.01 79.33 0.00
20 2.85 4.56 18.80 6.18* 3.01 64.61 0.00
21 6.75* 11.07 6.59 5.29 2.85 67.45 0.00
22 7.49 6.92 27.75 14.16* 8.71 34.99 0.00
23 8.87 5.45* 5.86 5.70 2.20 71.93 0.00
24 7.97 8.79 6.75 4.23* 7.81 64.44 0.00
25 3.25 7.32 4.39* 5.37 3.50 76.16 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
2008 AMC 12 A Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
123.0 1 1
120.0 2 1 1
118.5 2 2 1
109.5 1 1
108.0 2 1 1
106.5 1 1
105.0 1 1
103.5 5 3 3 1
102.0 1 3
100.5 4 2 2 2 2
99.0 2 2
97.5 1 3 2 3
96.0 3 2 2
94.5 5 1 3 5
93.0 1 2 1 2
91.5 1 1 2
90.0 5 1 1 5
88.5 5 7 7 5 1
87.0 5 1 1 2 1 3
85.5 4 1 3
84.0 7 2 3 6 1
82.5 5 6 1 2 5 6
81.0 7 5 1 7 5
79.5 7 4 4 7
78.0 4 2 2 3 4 6
76.5 20 13 5 16 15
75.0 14 5 3 10 5 1
73.5 8 5 9 6 1
72.0 16 9 1 2 3 9 11 1
70.5 20 7 2 1 14 11 2
69.0 22 11 2 1 13 18
67.5 21 8 1 2 14 14 4
66.0 23 19 2 22 18 1
64.5 23 16 1 2 19 19 2
63.0 25 21 4 4 29 10 3
61.5 26 10 3 1 21 13 1
60.0 31 22 4 3 33 18 1
58.5 32 30 3 6 30 25 1 1
57.0 28 26 1 2 32 23 3
55.5 32 30 3 5 35 21 6
54.0 46 33 2 4 45 29 4
52.5 32 23 3 3 30 21 3
51.0 43 19 2 6 33 23 4
49.5 27 43 3 7 36 32 2
48.0 45 48 1 6 7 43 37 8
46.5 27 34 1 4 2 39 18 3
45.0 37 31 5 4 42 23 4
43.5 19 41 1 5 1 34 22 1
42.0 43 42 6 4 41 34 1 6
40.5 17 21 3 1 22 15 2
39.0 17 21 3 5 14 17 3
37.5 17 26 3 3 23 14 4
36.0 22 17 3 3 21 15 3
34.5 15 10 1 1 16 8
33.0 8 15 1 2 12 9
31.5 6 14 3 11 7
30.0 10 12 3 10 10 2
28.5 3 15 1 3 11 4
27.0 1 5 2 3 2
25.5 1 2 3
24.0 1 5 1 6
22.5 1 2 2 1 1 1
21.0 1 1
19.5 1 1 1 1
18.0 4 4 2 4 3
16.5 1 1
15.0 1 1
13.5 1 1 2
12.0 2 1 1
7.5 1 1
American Mathematics Competitions
2008 AMC 12 A Results for Nebraska
Analysis
Table of Item Difficulty for the 2008
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 2.94 0.67 8.10 81.92* 5.27 1.05 0.06
2 85.08* 6.21 3.38 0.33 3.99 0.94 0.06
3 4.22 8.37 52.36* 9.43 5.55 20.02 0.06
4 8.15 31.23* 5.55 6.05 3.83 45.04 0.17
5 3.05 25.62* 17.08 22.85 9.76 21.58 0.06
6 43.43* 7.82 4.33 23.29 3.11 17.97 0.06
7 5.60 5.49 7.88 56.79* 8.37 15.81 0.06
8 5.10 11.43 35.00* 4.94 16.20 27.29 0.06
9 5.99 9.04 6.54 20.58* 6.16 51.58 0.11
10 14.64 31.00 10.65 23.74* 3.66 16.31 0.00
11 6.05 7.71 47.09* 6.66 7.60 24.90 0.00
12 7.88 12.20* 8.10 5.38 4.88 61.56 0.00
13 3.88 11.48* 5.77 21.02 8.10 49.64 0.11
14 9.87* 7.04 3.44 3.99 2.66 72.93 0.06
15 8.21 10.70 8.76 6.88* 10.32 55.07 0.06
16 3.83 7.88 6.10 4.55* 2.27 75.32 0.06
17 2.44 4.27 4.99 5.38* 4.10 78.76 0.06
18 2.72 4.22 4.88* 3.27 5.38 79.48 0.06
19 3.11 6.21 6.43* 4.44 2.16 77.59 0.06
20 2.88 4.33 3.99 2.50 2.94* 83.31 0.06
21 5.21 4.27 4.99 5.71* 3.16 76.59 0.06
22 3.94 6.88 4.44* 5.66 5.38 73.71 0.00
23 2.44 3.66 3.72 2.94* 2.27 84.91 0.06
24 5.21 11.70 8.21 3.33* 6.27 65.28 0.00
25 2.16 4.38 4.33 5.88* 2.94 80.31 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
2008 AMC 10 B Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
114.0 1 1
100.5 1 1
93.0 1 1
88.5 1 1
87.0 1 1
85.5 3 1 2 2
84.0 2 1 1
82.5 4 1 1 4 1
79.5 1 1 1 1
78.0 2 3 3 2
76.5 1 1 2
75.0 1 1
73.5 2 2 1
72.0 2 2 1 3
70.5 1 2
69.0 5 2 6 1
67.5 1 7 6 2
66.0 2 5 6 2
64.5 2 2 1 4
63.0 4 4 7 1
61.5 5 3 5 3
60.0 7 5 7 5
58.5 2 9 8 3
57.0 4 2 2
55.5 2 6 5 3
54.0 8 8 8 8
52.5 1 5 6
51.0 2 12 6 8
49.5 3 5 6 2
48.0 5 9 7 7
46.5 2 6 3 5
45.0 8 6 7 8
43.5 6 2 4
42.0 3 5 4 5
40.5 2 3 3 4
39.0 3 1 1 3
37.5 1 2 3
36.0 2 6 5 4
34.5 4 6 4 6
33.0 1 1 1 1
31.5 2 2
30.0 3 3
28.5 2 2 2 2
27.0 2 2
25.5 2 1 1
24.0 1 1
22.5 1 1
21.0 1 1
19.5 1 1
18.0 1 1
13.5 1 1
American Mathematics Competitions
2008 AMC 10 B Results for Nebraska
Analysis
Table of Item Difficulty for the 2008
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 5.28 0.38 3.77 11.32 77.36* 1.89 0.00
2 7.92 65.66* 9.81 4.91 2.26 9.43 0.00
3 19.25 3.77 7.92 16.60* 4.91 47.55 0.00
4 13.58 17.36 44.91* 1.89 2.26 20.00 0.00
5 31.70* 11.70 1.51 2.26 3.77 49.06 0.00
6 7.17 6.79 23.77* 11.70 8.30 42.26 0.00
7 12.83 6.04 50.57* 6.04 6.04 18.11 0.38
8 0.75 15.85 48.68* 9.06 7.92 17.74 0.00
9 8.30* 3.40 4.53 7.17 7.17 69.43 0.00
10 13.58* 4.91 5.28 3.77 7.17 65.28 0.00
11 2.26 7.17* 5.66 9.06 4.53 71.32 0.00
12 66.79* 6.42 5.28 2.26 5.28 13.96 0.00
13 21.89 3.40* 9.43 3.77 2.26 59.25 0.00
14 9.43 20.75* 5.66 3.77 2.26 57.74 0.38
15 5.28* 8.30 5.66 7.55 5.28 67.92 0.00
16 23.40* 23.02 3.02 4.91 6.04 39.62 0.00
17 9.81 3.40* 26.42 16.60 9.81 33.96 0.00
18 11.70 9.81* 12.45 3.40 4.53 58.11 0.00
19 4.15 3.02 4.15 6.42 4.91* 77.36 0.00
20 7.92 27.92* 9.43 10.94 3.77 40.00 0.00
21 12.08 9.06 7.92* 6.04 2.26 62.64 0.00
22 13.58 5.66 19.62* 15.47 9.06 36.60 0.00
23 6.04 6.42* 6.04 7.55 1.51 72.45 0.00
24 6.42 10.94 11.32* 7.17 8.30 55.85 0.00
25 13.58 12.45* 10.19 4.91 9.81 49.06 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
2008 AMC 12 B Results for Nebraska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
120.0 1 1
114.0 1 1
109.5 2 1 1
108.0 1 1
100.5 3 2 1
99.0 2 2 1
97.5 1 1
94.5 2 1 2
88.5 2 1 1 1 1
85.5 1 1 2
84.0 3 1 2 2
82.5 2 2 1 1 2 1
79.5 2 1 1
78.0 1 2 1 2
76.5 6 2 2 3 3
75.0 4 2 1 1 2 3
73.5 2 2 2 2
72.0 7 6 1 9 3
70.5 2 3 1 3 1
69.0 1 2 1 2
67.5 5 8 1 1 8 4
66.0 6 4 5 5 1
64.5 5 5 4 6
63.0 7 7 1 2 7 4
61.5 1 7 3 5 1
60.0 15 8 10 14
58.5 5 6 4 8
57.0 6 3 1 5 4
55.5 5 3 5 3
54.0 6 9 8 7
52.5 3 6 4 6
51.0 8 8 7 9
49.5 4 4 1 4 3
48.0 7 6 2 4 7
46.5 2 7 5 4
45.0 3 6 1 4 4
43.5 3 2 1
42.0 5 5 1 5 4
40.5 2 2 3 1
39.0 7 2 5 5
37.5 2 3 2 3
36.0 1 1 1 1
34.5 2 2 3 1
33.0 4 1 2 3
31.5 1 1 1 1
30.0 6 2 3 5
28.5 1 1
27.0 2 1 1
25.5 1 1 1 1
24.0 3 1 2 3
18.0 1 1
American Mathematics Competitions
2008 AMC 12 B Results for Nebraska
Analysis
Table of Item Difficulty for the 2008
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 4.55 1.52 3.94 8.79 78.79* 2.42 0.00
2 6.06 70.91* 9.70 1.52 3.64 8.18 0.00
3 8.18 13.03 66.06* 3.03 1.52 8.18 0.00
4 3.64 4.55 4.85 62.12* 4.85 20.00 0.00
5 1.82 7.88 58.18* 8.48 4.85 18.79 0.00
6 78.48* 3.64 3.03 3.94 3.64 7.27 0.00
7 47.58* 7.27 1.82 1.82 6.36 35.15 0.00
8 4.55 5.15 43.03* 10.30 5.45 31.52 0.00
9 16.06* 4.85 6.36 4.55 6.36 61.82 0.00
10 6.06 18.79* 14.24 5.45 4.55 50.91 0.00
11 6.06* 5.15 5.76 6.97 37.27 38.79 0.00
12 24.24 12.73* 6.06 4.55 6.06 46.36 0.00
13 1.82 11.52* 4.85 4.24 2.12 75.45 0.00
14 5.76 4.85 10.61* 10.30 7.27 61.21 0.00
15 3.33 6.67 7.88* 3.94 5.76 72.42 0.00
16 15.15 12.12* 9.39 8.79 2.12 52.42 0.00
17 6.06 5.76 6.36* 3.64 3.03 75.15 0.00
18 3.94 3.94 7.27 7.27 8.18* 69.39 0.00
19 8.18 4.24* 6.06 5.76 3.94 71.52 0.30
20 25.15 18.79* 8.48 3.33 4.85 39.39 0.00
21 2.73 3.64 3.94 5.76 3.33* 80.61 0.00
22 10.30 5.76 8.48 6.67 9.70* 59.09 0.00
23 3.64* 6.36 5.45 2.73 3.03 78.79 0.00
24 0.91 4.55 4.55* 3.64 1.52 84.85 0.00
25 2.73 2.12* 5.45 9.09 1.52 79.09 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column