American Mathematics Competitions
2008 AMC 10 A Results for Nevada
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 330
Number of unofficial participants: 33
Average score of participants: 51.6
Average score for female students is: 45.3 ( 138 Students)
Average score for male students is: 56.7 ( 162 Students)
Average score for unspecified gender is 53.0 ( 30 Students)
Average score for grade 10 is: 50.4 ( 191 Students)
Average score for grade 9 is: 51.1 ( 103 Students)
Average score for grade 8 and below is: 73.6 ( 23 Students)
Average score with unknown grade: 33.3 ( 13 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 1
Number of schools returning results 15
Average school winning score 84.50
American Mathematics Competitions
2008 AMC 12 A Results for Nevada
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 538
Number of unofficial participants: 0
Average score of participants: 59.3
Average score for female students is: 55.2 ( 237 Students)
Average score for male students is: 62.3 ( 258 Students)
Average score for unspecified gender is 64.0 ( 43 Students)
Average score for grade 12 is: 60.6 ( 274 Students)
Average score for grade 11 is: 57.8 ( 240 Students)
Average score for grade 10 is: 66.4 ( 12 Students)
Average score for grade 9 is: 55.5 ( 5 Students)
Average score with unknown grade: 49.9 ( 7 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 10
Number of schools returning results 13
Average school winning score 97.73
Average school team score 249.92
American Mathematics Competitions
2008 AMC 10 B Results for Nevada
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 219
Number of unofficial participants: 0
Average score of participants: 58.2
Average score for female students is: 52.7 ( 103 Students)
Average score for male students is: 62.7 ( 96 Students)
Average score for unspecified gender is 64.7 ( 20 Students)
Average score for grade 10 is: 58.3 ( 131 Students)
Average score for grade 9 is: 57.0 ( 65 Students)
Average score for grade 8 and below is: 60.9 ( 16 Students)
Average score with unknown grade: 60.2 ( 7 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 9
Average school winning score 85.17
American Mathematics Competitions
2008 AMC 12 B Results for Nevada
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 333
Number of unofficial participants: 0
Average score of participants: 57.7
Average score for female students is: 54.2 ( 162 Students)
Average score for male students is: 62.4 ( 145 Students)
Average score for unspecified gender is 53.3 ( 26 Students)
Average score for grade 12 is: 57.2 ( 168 Students)
Average score for grade 11 is: 57.9 ( 153 Students)
Average score for grade 10 is: 52.2 ( 5 Students)
Average score for grade 8 and below is: 75.0 ( 5 Students)
Average score with unknown grade: 55.5 ( 2 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 3
Number of schools returning results 11
Average school winning score 90.27
Average school team score 239.45
2008 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
349.5 1 1
321.0 1 2
294.0 1 3
289.5 2 4
285.0 1 6
276.0 1 7
274.5 1 8
267.0 2 9
265.5 1 11
264.0 1 12
261.0 1 13
250.5 1 14
247.5 1 15
229.5 1 16
220.5 1 17
219.0 1 18
204.0 1 19
187.5 2 20
172.5 1 22
165.0 1 23
96.0 1 24
2008 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
138.0 1
126.0 1
124.5 1
121.5 1
120.0 1
115.5 1 1
114.0 1 1
109.5 1
108.0 1
103.5 1 1
102.0 2 1
100.5 3
99.0 1 2 1
97.5 2
96.0 2 1
94.5 7 2 2
93.0 2 1 1
91.5 2 1 1 1
90.0 8 1 4
88.5 6 2 1
87.0 3 3 1 1
85.5 2 1
84.0 6 2 2 4
82.5 12 4 2 2
81.0 4 9 2
79.5 3 3 3 3
78.0 4 4 4 3
76.5 12 11 3 2
75.0 9 6 5 2
73.5 7 12 6 6
72.0 12 15 6 8
70.5 20 11 2 6
69.0 11 9 7 6
67.5 11 5 8 9
66.0 17 11 5 10
64.5 18 6 4 8
63.0 13 8 3 5
61.5 14 11 12 7
60.0 24 12 7 10
58.5 19 12 11 4
57.0 23 17 10 10
55.5 13 7 4 7
54.0 24 14 7 10
52.5 34 11 12 4
51.0 15 10 14 5
49.5 23 14 15 5
48.0 13 17 14 8
46.5 23 5 16 9
45.0 16 6 13 6
43.5 15 5 11 7
42.0 16 4 14 5
40.5 15 8 7 5
39.0 12 9 12 3
37.5 8 8 11 3
36.0 13 6 13 8
34.5 5 2 9 4
33.0 4 2 3 2
31.5 2 2 5 2
30.0 2 4 12 4
28.5 2 6
27.0 2 4
25.5 5 3 3
24.0 1 3 4 1
22.5 1 1
21.0 2
19.5 1 3
18.0 2
16.5 1
15.0 2
12.0 2
American Mathematics Competitions
2008 AMC 10 A Results for Nevada
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
120.0 1
114.0 1 1
109.5 1 1
103.5 1 1
102.0 2 1 1
99.0 2 1 1
94.5 2 2
93.0 1 1
91.5 1 1
87.0 1 1
84.0 1 1 1 1
82.5 2 1 1
81.0 2 1 1
79.5 2 1 2 1
78.0 4 1 3
76.5 2 1 1 2
75.0 2 2 1 2 2
73.5 4 2 1 4 1
72.0 2 3 1 4 1
70.5 1 1 1
69.0 7 1 2 4
67.5 6 1 2 1 5
66.0 2 1 3 2
64.5 2 1 1 1 2
63.0 1 1 1 2
61.5 8 3 1 4 7
60.0 5 7
58.5 4 6 4 7
57.0 7 3 4 6
55.5 3 1 1 3
54.0 3 4 4 3
52.5 5 4 3 9
51.0 8 4 1 3 10
49.5 9 5 5 10
48.0 6 7 1 4 9
46.5 8 8 4 11 1
45.0 8 4 1 12
43.5 7 4 2 9
42.0 2 12 5 9
40.5 1 5 1 5 1
39.0 4 8 4 8
37.5 4 6 3 8
36.0 5 6 7 4 2
34.5 4 5 8 1
33.0 2 3
31.5 2 3 2 3
30.0 4 7 1 8 1 2
28.5 1 5 3 3
27.0 1 2 1 2 1
25.5 1 2 2 1
24.0 3 1 2 1
22.5 1 1
19.5 2 3
18.0 2 1 1
American Mathematics Competitions
2008 AMC 10 A Results for Nevada
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 2.73 0.91 8.48 80.30* 6.06 1.52 0.00
2 40.91* 22.42 26.97 3.33 0.91 5.45 0.00
3 72.42* 5.15 4.55 1.82 3.33 12.73 0.00
4 5.45 11.82 49.39* 8.79 9.70 14.85 0.00
5 9.09 33.03* 5.76 3.64 4.24 44.24 0.00
6 6.06 3.94 5.15 14.85* 46.06 23.94 0.00
7 55.76 4.85 6.36 3.64 7.27* 22.12 0.00
8 42.12* 9.39 3.03 26.67 1.82 16.67 0.30
9 5.45 28.48* 15.76 29.39 7.88 13.03 0.00
10 2.73 40.61 8.79 0.91 38.79* 8.18 0.00
11 7.88 4.24 10.91 54.24* 12.42 10.30 0.00
12 12.73 5.76 27.58* 13.33 6.36 34.24 0.00
13 14.55 33.94 9.70 21.52* 4.24 16.06 0.00
14 6.67 10.00 10.30 15.45* 6.06 51.52 0.00
15 3.64 3.03 28.18 25.76* 10.30 29.09 0.00
16 4.24 8.79* 6.67 24.55 11.52 44.24 0.00
17 8.18 7.27* 7.27 6.67 4.85 65.76 0.00
18 5.76 5.45* 7.58 7.27 2.12 71.82 0.00
19 6.36 8.18 7.27* 5.15 4.55 68.48 0.00
20 2.73 7.88 20.30 6.97* 3.64 58.48 0.00
21 9.39* 17.88 6.36 6.97 3.03 56.36 0.00
22 7.58 8.48 20.91 21.21* 8.48 33.33 0.00
23 12.73 6.06* 9.70 7.58 4.24 59.39 0.30
24 6.36 12.12 12.73 7.27* 7.27 54.24 0.00
25 3.64 6.67 6.06* 6.06 5.45 72.12 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 Nevada
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
138.0 1 1
126.0 1 1
115.5 1 1
114.0 1 1
103.5 1 1
100.5 2 1 1 2
97.5 2 1 1
96.0 1 1 1 1
94.5 6 1 7
93.0 1 2
91.5 2 1 1
90.0 3 2 1 5 2
88.5 5 1 1 1 4
87.0 1 1 1 2
85.5 2 1 1
84.0 2 2 1 1 4
82.5 8 3 5 7
81.0 4 1 2 1
79.5 2 1 1 2
78.0 3 1 3
76.5 7 4 1 2 2 7
75.0 3 5 3 6
73.5 5 2 4 3
72.0 6 6 7 5
70.5 13 5 13 7
69.0 6 3 5 6
67.5 2 5 7 4
66.0 9 7 4 13
64.5 10 7 12 6
63.0 9 4 1 8 4
61.5 4 8 4 9 1
60.0 12 11 16 8
58.5 8 7 8 10 1
57.0 11 9 1 11 10 1
55.5 6 6 1 6 6
54.0 6 17 1 9 13 1
52.5 16 16 1 15 18
51.0 7 8 8 7
49.5 7 14 1 7 15
48.0 10 2 1 7 5
46.5 11 12 11 12
45.0 9 6 1 6 8 1
43.5 4 11 1 7 7
42.0 5 11 7 9
40.5 4 10 8 7
39.0 5 7 7 5
37.5 5 2 3 4 1
36.0 3 8 3 9 1
34.5 3 2 3 2
33.0 3 1 1 1 2
31.5 2 2
30.0 2 2
27.0 2 2
24.0 1 1
22.5 1 1
American Mathematics Competitions
2008 AMC 12 A Results for Nevada
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 1.67 1.12 7.62 84.94* 3.90 0.74 0.00
2 92.94* 3.16 0.74 0.37 2.60 0.19 0.00
3 4.46 6.69 62.45* 8.55 4.65 13.20 0.00
4 8.92 40.15* 4.28 7.81 4.09 34.76 0.00
5 1.86 37.36* 11.71 30.67 8.55 9.67 0.19
6 51.30* 6.88 3.72 26.58 2.60 8.92 0.00
7 5.95 4.46 6.69 64.31* 7.43 11.15 0.00
8 3.72 7.81 50.00* 3.53 18.96 15.99 0.00
9 6.88 6.13 8.74 27.14* 4.83 46.28 0.00
10 13.01 33.83 7.81 31.78* 3.35 10.22 0.00
11 6.32 6.88 52.60* 6.69 4.46 23.05 0.00
12 12.45 23.42* 10.59 9.29 5.76 38.48 0.00
13 2.97 14.68* 7.62 21.00 9.29 44.42 0.00
14 7.06* 7.06 3.72 3.53 3.35 75.28 0.00
15 7.81 11.52 9.67 8.74* 14.68 47.58 0.00
16 2.79 10.59 5.20 7.06* 0.37 73.98 0.00
17 0.74 3.72 7.99 6.13* 5.95 75.46 0.00
18 1.86 3.16 4.46* 3.35 5.95 81.23 0.00
19 1.67 8.74 6.51* 5.02 1.86 76.21 0.00
20 2.97 4.09 3.35 2.60 4.83* 82.16 0.00
21 5.76 5.20 6.32 6.51* 2.42 73.79 0.00
22 3.16 5.76 4.83* 7.99 4.46 73.79 0.00
23 2.79 2.97 1.49 3.35* 2.23 87.17 0.00
24 3.53 19.70 10.41 3.16* 7.43 55.76 0.00
25 1.12 4.28 4.28 7.25* 2.60 80.48 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 Nevada
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
115.5 1 1
108.0 1 1
102.0 1 1
99.0 1
96.0 1 1
93.0 1 1
91.5 1 1
90.0 4 1 3
88.5 1 1
87.0 1 1
84.0 4 2 2
82.5 2 2
79.5 1 1 1 1 1
78.0 1 3
76.5 1 1
75.0 2 2
73.5 4 1 1 4 1
72.0 7 1 1 3 4
70.5 2 3 1 2 3
69.0 3 2 1 4 1
67.5 3 5 4 5
66.0 5 4 1 1 1 6 1
64.5 4 4 1 2 5
63.0 4 1 1 4
61.5 6 1 3 4
60.0 1 7 1 9
58.5 2 2 1 3
57.0 2 8 7 3
55.5 2 4 2 5
54.0 2 5 5 4 1
52.5 2 2 1 3
51.0 2 3 2 3
49.5 2 3 1 1 3
48.0 3 5 3 5
46.5 4 5 2 1 6
45.0 2 3 5 1
43.5 2 4 3 4
42.0 5 2 3
40.5 2 3 2 3
39.0 1 2 2 1
37.5 1 2 3
36.0 3 5 3 5
34.5 3 1 2 1
33.0 1 1 1 1
31.5 2 2
30.0 3 1 1 3
25.5 1 2 1 2
24.0 1 1
American Mathematics Competitions
2008 AMC 10 B Results for Nevada
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 5.02 0.46 2.74 10.96 78.08* 2.74 0.00
2 7.31 78.54* 7.31 1.83 1.37 3.65 0.00
3 15.07 5.48 8.68 26.94* 8.68 35.16 0.00
4 17.81 16.44 49.32* 2.28 0.46 13.70 0.00
5 46.12* 15.07 3.20 2.74 5.02 27.85 0.00
6 7.31 5.94 37.44* 13.70 12.79 22.83 0.00
7 7.31 9.13 58.90* 6.85 5.02 12.79 0.00
8 1.83 8.22 50.23* 10.96 5.48 23.29 0.00
9 13.70* 3.20 6.85 12.79 13.70 49.77 0.00
10 16.44* 6.85 5.94 6.39 10.96 53.42 0.00
11 2.28 9.13* 5.48 15.98 5.02 62.10 0.00
12 72.15* 6.85 4.11 1.37 2.28 13.24 0.00
13 26.03 7.31* 7.76 3.20 3.20 52.51 0.00
14 14.61 28.77* 2.74 4.11 2.28 47.49 0.00
15 8.68* 6.85 11.42 8.22 3.65 61.19 0.00
16 19.18* 26.48 3.65 7.31 6.39 36.99 0.00
17 10.05 7.31* 21.46 13.24 14.16 33.79 0.00
18 7.31 16.44* 13.24 4.57 0.91 57.53 0.00
19 3.20 3.65 7.31 10.50 4.57* 70.78 0.00
20 7.31 34.25* 11.42 10.50 3.20 33.33 0.00
21 10.50 12.33 5.94* 5.48 4.11 61.64 0.00
22 9.59 2.74 25.11* 15.07 9.59 37.90 0.00
23 10.05 5.02* 5.94 5.94 4.11 68.95 0.00
24 9.13 5.94 8.68* 6.39 10.96 58.90 0.00
25 21.92 13.70* 7.76 3.65 4.11 48.86 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 Nevada
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
124.5 1 1
121.5 1 1
99.0 1 1
94.5 2 1 1
91.5 1 1
90.0 1 1
88.5 1 2
87.0 2 1 1 1 1
85.5 1 1
84.0 1 1 1
82.5 3 1 2 2
81.0 3 6 1 5 3
79.5 1 2 1 2
78.0 3 1 4
76.5 7 4 6 5
75.0 4 2 4 2
73.5 8 2 6 6
72.0 9 5 5 10
70.5 4 5 9 2
69.0 4 5 5 4
67.5 1 4 1 4
66.0 7 4 8 3
64.5 3 3 6
63.0 4 4 4 4
61.5 6 4 5 6
60.0 4 8 4 8
58.5 5 7 8 4
57.0 3 12 1 10 5 1
55.5 2 4 1 3 3
54.0 9 4 7 6 1
52.5 5 6 4 7
51.0 5 4 1 4 5
49.5 4 9 2 4 8
48.0 5 8 6 11
46.5 3 2 2 3
45.0 3 2 4 2
43.5 2 2 3 2
42.0 1 3 1 3
40.5 2 6 4 4
39.0 2 7 3 6
37.5 3 5 5 3
36.0 1 4 3 3
34.5 2 1 1
33.0 2 1 1
31.5 2
30.0 1 1 2 2
28.5 1 2
25.5 2 3 1 4
24.0 1 2 1 2
21.0 2 1 1
19.5 1 1
16.5 1 1
15.0 1 1 1 1
12.0 1 1 1 1
American Mathematics Competitions
2008 AMC 12 B Results for Nevada
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 3.60 2.40 4.50 13.21 74.77* 1.50 0.00
2 4.50 76.28* 8.11 3.00 3.00 5.11 0.00
3 9.61 12.91 66.97* 3.00 0.00 7.51 0.00
4 3.60 5.71 5.71 66.07* 4.20 14.71 0.00
5 0.90 6.61 58.26* 9.31 9.61 15.32 0.00
6 81.68* 3.90 3.30 3.00 1.50 6.61 0.00
7 48.95* 11.11 2.70 2.40 8.41 26.43 0.00
8 5.11 4.80 42.34* 15.62 5.41 26.43 0.30
9 23.12* 8.41 5.41 9.01 6.31 47.75 0.00
10 7.51 20.42* 17.12 7.51 5.71 41.74 0.00
11 8.11* 5.71 5.11 8.71 30.63 41.74 0.00
12 24.32 12.61* 11.71 6.91 5.71 38.44 0.30
13 5.11 10.51* 4.80 9.31 2.40 67.57 0.30
14 7.21 6.31 16.82* 10.21 9.91 49.55 0.00
15 2.40 7.21 9.91* 4.80 9.61 66.07 0.00
16 14.71 11.11* 10.51 12.31 2.70 48.65 0.00
17 7.21 3.90 7.81* 6.61 3.60 70.87 0.00
18 6.01 6.61 7.51 12.31 6.61* 60.96 0.00
19 6.91 7.81* 7.21 6.61 3.00 68.47 0.00
20 25.53 11.41* 12.61 5.11 4.20 41.14 0.00
21 4.20 5.41 5.41 6.31 2.40* 75.98 0.30
22 8.71 9.01 9.61 9.31 6.31* 56.76 0.30
23 4.80* 6.91 7.81 7.21 2.10 71.17 0.00
24 4.20 7.21 5.41* 2.70 1.50 78.98 0.00
25 3.30 5.71* 6.01 7.51 4.80 72.67 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column