American Mathematics Competitions
2008 AMC 10 A Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 392
Number of unofficial participants: 0
Average score of participants: 47.7
Average score for female students is: 45.2 ( 182 Students)
Average score for male students is: 50.7 ( 136 Students)
Average score for unspecified gender is 48.3 ( 74 Students)
Average score for grade 10 is: 46.7 ( 205 Students)
Average score for grade 9 is: 49.0 ( 126 Students)
Average score for grade 8 and below is: 50.3 ( 12 Students)
Average score with unknown grade: 48.0 ( 49 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 1
Number of schools returning results 13
Average school winning score 85.04
American Mathematics Competitions
2008 AMC 12 A Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 350
Number of unofficial participants: 0
Average score of participants: 55.5
Average score for female students is: 51.8 ( 140 Students)
Average score for male students is: 59.1 ( 155 Students)
Average score for unspecified gender is 54.7 ( 55 Students)
Average score for grade 12 is: 55.9 ( 122 Students)
Average score for grade 11 is: 54.3 ( 191 Students)
Average score for grade 10 is: 69.0 ( 8 Students)
Average score with unknown grade: 58.0 ( 29 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 2
Number of schools returning results 12
Average school winning score 90.63
Average school team score 243.25
American Mathematics Competitions
2008 AMC 10 B Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 43
Number of unofficial participants: 0
Average score of participants: 63.6
Average score for female students is: 49.8 ( 13 Students)
Average score for male students is: 69.3 ( 29 Students)
Average score for unspecified gender is 76.5 ( 1 Student)
Average score for grade 10 is: 64.9 ( 15 Students)
Average score for grade 9 is: 61.9 ( 26 Students)
Average score for grade 8 and below is: 73.5 ( 1 Student)
Average score with unknown grade: 76.5 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 5
Average school winning score 90.00
American Mathematics Competitions
2008 AMC 12 B Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 68
Number of unofficial participants: 0
Average score of participants: 60.0
Average score for female students is: 53.1 ( 28 Students)
Average score for male students is: 65.8 ( 33 Students)
Average score for unspecified gender is 60.2 ( 7 Students)
Average score for grade 12 is: 63.3 ( 30 Students)
Average score for grade 11 is: 56.9 ( 36 Students)
Average score for grade 10 is: 65.3 ( 2 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 0
Number of schools returning results 4
Average school winning score 79.13
Average school team score 226.88
2008 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
274.5 1 1
267.0 2 2
265.5 1 4
264.0 1 5
255.0 1 6
252.0 1 7
243.0 1 8
237.0 1 9
226.5 1 10
222.0 1 11
220.5 1 12
219.0 1 13
214.5 1 14
202.5 1 15
196.5 1 16
2008 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
127.5 1
126.0 1
114.0 1 1
111.0 1 1
105.0 1
100.5 1
97.5 1
96.0 1
93.0 2 1 2
91.5 1 1 2 1
90.0 2 1
88.5 3 1 2
87.0 4 1
85.5 2 1
84.0 2 1
82.5 2 1 1
81.0 2 2 2
79.5 2 2 1
78.0 7 1 2
76.5 8 1 1
75.0 7 3 3
73.5 10 2 2 1
72.0 10 2 2
70.5 5 3 3 5
69.0 5 1 4 1
67.5 6 3 2
66.0 7 3 6 1
64.5 5 3 5 3
63.0 7 2 10
61.5 12 4 11 1
60.0 12 3 12
58.5 11 4 11 2
57.0 17 1 10 1
55.5 10 3 11
54.0 15 13 2
52.5 18 2 12 1
51.0 12 1 15 1
49.5 17 2 7 2
48.0 16 1 23 2
46.5 6 2 16 1
45.0 11 16
43.5 12 3 20 2
42.0 16 2 25 1
40.5 11 1 15
39.0 14 3 17
37.5 6 15
36.0 11 1 18 1
34.5 6 16 1
33.0 4 11
31.5 1 2 11
30.0 1 2 4 1
28.5 4 6
27.0 7 1
25.5 3 2
24.0 1 1 2
22.5 4
21.0 1 4
18.0 1 3
13.5 1
12.0 1
American Mathematics Competitions
2008 AMC 10 A Results for Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
127.5 1 1
114.0 1 1
111.0 1 1
97.5 1
96.0 1 1
93.0 2 1 1
91.5 1 2
85.5 1 1
82.5 1 1
81.0 1 1 2
79.5 1
78.0 1 1 1 1
76.5 1 1
75.0 3 1 2
73.5 1 2
70.5 3 3
69.0 3 2 1 1
67.5 1 2 1 2
66.0 2 1 1 2 2 1
64.5 1 2 3 2
63.0 2 6 4 5 1
61.5 4 6 1 6 3 1
60.0 3 7 4 6 2
58.5 5 1 1 6 3 1
57.0 2 8 1 4 5
55.5 3 5 1 2 5 3
54.0 6 6 1 6 5 1
52.5 6 3 4 6 2
51.0 6 8 5 9 1
49.5 7 1 6
48.0 9 10 1 9 9 4
46.5 5 5 1 6 5 4
45.0 2 10 1 1 12 2
43.5 5 11 7 10 3
42.0 11 7 9 10 6
40.5 4 8 6 7 2
39.0 4 9 4 10 3
37.5 7 8 4 10 1
36.0 4 11 6 11 1
34.5 3 10 5 10 1
33.0 5 6 1 3 7
31.5 1 9 3 8
30.0 2 4
28.5 2 2 1 1 4
27.0 3 4 3 4
25.5 1 1 1 1
24.0 1 1 1
22.5 2 2 1 2 1
21.0 2 2 2 2
18.0 1 1 2 1
13.5 1 1
12.0 1
American Mathematics Competitions
2008 AMC 10 A Results for Alaska
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 3.83 1.02 8.93 77.04* 7.65 1.53 0.00
2 31.89* 21.43 34.18 0.77 0.77 10.97 0.00
3 60.20* 4.34 4.08 2.04 3.83 25.51 0.00
4 8.42 9.18 31.63* 15.31 6.12 29.34 0.00
5 7.91 20.41* 5.36 4.34 2.30 59.69 0.00
6 2.81 2.30 2.81 7.65* 59.69 24.74 0.00
7 55.61 3.32 3.83 2.04 5.10* 29.85 0.26
8 32.91* 8.42 2.30 23.21 3.57 29.59 0.00
9 5.87 21.17* 19.39 20.15 6.89 26.53 0.00
10 4.08 32.65 11.22 0.77 38.78* 12.50 0.00
11 6.63 4.08 9.44 49.74* 11.22 18.88 0.00
12 10.20 7.40 17.35* 7.65 5.36 52.04 0.00
13 9.18 27.04 8.16 27.81* 5.61 22.19 0.00
14 6.38 7.14 6.63 11.99* 5.87 61.99 0.00
15 3.06 2.55 30.87 17.35* 6.38 39.80 0.00
16 2.30 6.12* 5.61 16.84 10.20 58.93 0.00
17 10.71 5.36* 5.36 5.10 3.06 70.41 0.00
18 3.57 4.59* 5.10 4.85 2.04 79.85 0.00
19 3.83 4.85 6.12* 3.06 4.59 77.55 0.00
20 4.08 7.14 12.50 4.59* 2.30 69.39 0.00
21 8.42* 10.20 5.61 5.10 2.30 67.86 0.51
22 9.44 5.10 20.92 17.86* 7.14 39.54 0.00
23 8.16 5.61* 8.16 4.85 3.06 70.15 0.00
24 6.38 9.18 7.65 2.30* 8.93 65.56 0.00
25 3.32 6.63 2.30* 4.59 5.36 77.81 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 Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
126.0 1 1
105.0 1 1
93.0 1 1 1
91.5 1 1
90.0 1 1 1
88.5 2 1 1 1 1
87.0 2 2 1 3
85.5 1 1 2
84.0 1 1 2
82.5 1 1 1
81.0 1 1 2
79.5 2 2
78.0 6 1 1 3 3
76.5 6 1 1 4 2 1
75.0 2 2 1 4 2
73.5 6 1 1 2 4 3
72.0 7 3 1 7 2
70.5 2 1 1 2 2
69.0 4 1 3 2
67.5 2 3 3 2 1
66.0 5 2 4 3
64.5 3 1 4 1
63.0 2 4 4 3
61.5 5 5 6 6
60.0 6 2 5 5 2
58.5 4 6 1 7 3
57.0 10 5 12 5
55.5 6 3 1 7 1 1
54.0 8 7 10 4 1
52.5 6 12 8 10
51.0 7 2 5 6 1
49.5 7 9 1 11 3 2
48.0 5 6 8 6 2
46.5 1 3 4 2
45.0 3 4 6 4 1
43.5 5 5 8 2 2
42.0 5 8 9 5 2
40.5 4 3 5 5 1
39.0 5 8 11 3
37.5 3 2 3 2 1
36.0 10 5 6
34.5 2 2 4 2
33.0 1 3 2 2
31.5 1 1
30.0 1 1
28.5 1 3 2 2
25.5 3 3
24.0 1 1
21.0 1
18.0 1 1
American Mathematics Competitions
2008 AMC 12 A Results for Alaska
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 2.29 2.00 6.57 81.71* 6.00 1.43 0.00
2 88.00* 7.43 1.71 0.57 1.71 0.57 0.00
3 4.57 6.29 55.71* 8.57 5.43 19.43 0.00
4 7.43 32.57* 6.00 6.29 3.43 44.29 0.00
5 2.86 28.29* 13.71 25.43 6.00 23.71 0.00
6 41.43* 7.71 1.71 27.71 4.29 17.14 0.00
7 6.86 3.43 5.71 59.43* 6.86 17.71 0.00
8 6.57 6.00 40.57* 4.00 18.57 24.29 0.00
9 2.86 9.14 5.71 22.86* 6.29 53.14 0.00
10 16.29 31.43 7.43 29.71* 3.14 12.00 0.00
11 8.00 6.57 46.29* 4.86 6.00 28.29 0.00
12 10.86 11.14* 6.57 5.71 8.57 57.14 0.00
13 3.71 11.71* 5.43 21.71 8.00 49.14 0.29
14 8.29* 8.86 2.29 3.14 2.00 75.14 0.29
15 7.71 7.14 8.86 5.43* 10.86 60.00 0.00
16 4.00 4.86 5.43 3.43* 2.86 79.43 0.00
17 2.29 5.43 4.86 4.57* 6.86 76.00 0.00
18 2.29 3.43 5.71* 2.00 8.29 78.29 0.00
19 3.71 6.00 5.43* 5.14 2.00 77.71 0.00
20 3.71 2.86 2.00 3.71 2.57* 85.14 0.00
21 6.29 4.29 2.57 6.29* 3.14 77.43 0.00
22 3.14 6.29 4.86* 5.71 3.71 76.29 0.00
23 2.86 4.00 2.29 3.43* 1.71 85.71 0.00
24 2.00 13.43 7.14 4.00* 7.43 66.00 0.00
25 2.86 4.86 4.86 5.71* 2.86 78.86 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 10 B Results for Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
114.0 1 1
111.0 1 1
100.5 1 1
91.5 1 1
88.5 2 1 1
84.0 1 1
76.5 1
73.5 1 1
72.0 2 2
70.5 4 1 4 1
69.0 1 1
67.5 2 1 1
66.0 1 1
64.5 3 1 2
61.5 1 1
58.5 2 2
57.0 1 1
54.0 2 1 1
52.5 1 1
51.0 1 1
49.5 1 1 1 1
48.0 1 1 1 1
46.5 1 1
43.5 2 1 1
42.0 1 1
36.0 1 1
34.5 1 1
30.0 1 1
27.0 1 1
American Mathematics Competitions
2008 AMC 10 B Results for Alaska
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 4.65 2.33 0.00 11.63 79.07* 2.33 0.00
2 9.30 74.42* 6.98 2.33 0.00 6.98 0.00
3 16.28 4.65 4.65 39.53* 2.33 32.56 0.00
4 11.63 20.93 55.81* 2.33 0.00 9.30 0.00
5 41.86* 6.98 4.65 2.33 6.98 37.21 0.00
6 6.98 2.33 37.21* 18.60 9.30 25.58 0.00
7 4.65 13.95 72.09* 4.65 0.00 4.65 0.00
8 6.98 9.30 48.84* 6.98 13.95 13.95 0.00
9 20.93* 4.65 4.65 6.98 6.98 55.81 0.00
10 11.63* 11.63 0.00 4.65 2.33 69.77 0.00
11 2.33 16.28* 4.65 2.33 6.98 67.44 0.00
12 76.74* 9.30 4.65 0.00 2.33 6.98 0.00
13 16.28 18.60* 9.30 4.65 0.00 51.16 0.00
14 11.63 18.60* 2.33 4.65 9.30 53.49 0.00
15 13.95* 2.33 0.00 9.30 6.98 67.44 0.00
16 23.26* 23.26 6.98 2.33 0.00 44.19 0.00
17 11.63 20.93* 13.95 2.33 9.30 41.86 0.00
18 9.30 16.28* 9.30 6.98 2.33 55.81 0.00
19 2.33 2.33 2.33 2.33 9.30* 81.40 0.00
20 6.98 51.16* 11.63 9.30 0.00 20.93 0.00
21 13.95 2.33 2.33* 2.33 6.98 72.09 0.00
22 6.98 6.98 18.60* 11.63 13.95 41.86 0.00
23 13.95 4.65* 2.33 11.63 2.33 65.12 0.00
24 13.95 4.65 11.63* 11.63 9.30 48.84 0.00
25 18.60 20.93* 6.98 0.00 11.63 41.86 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 Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
93.0 1 1
91.5 1 1
90.0 1 1
88.5 1 1
87.0 1 1
82.5 1 1
81.0 1 1 1 1
79.5 2 2
78.0 1 1
75.0 1 2 1 2
73.5 1 1
72.0 2 2
70.5 3 1 2
69.0 1 1
66.0 3 1 2
64.5 1 1 1 2
63.0 1 1 2
61.5 1 2 1 3
60.0 1 1 1 2
58.5 2 2 4
57.0 1 1
55.5 2 1 2 1
52.5 2 2
51.0 1 1
49.5 1 1 2
48.0 1 1
46.5 1 1 1
43.5 1 2 1 2
42.0 1 2
40.5 1 1
39.0 3 2 1
36.0 1 1
31.5 1 1 1 1
30.0 2 2
24.0 1 1
American Mathematics Competitions
2008 AMC 12 B Results for Alaska
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 4.41 4.41 4.41 5.88 79.41* 1.47 0.00
2 7.35 75.00* 7.35 1.47 4.41 4.41 0.00
3 8.82 10.29 70.59* 0.00 1.47 8.82 0.00
4 1.47 1.47 7.35 66.18* 4.41 19.12 0.00
5 1.47 8.82 61.76* 5.88 5.88 16.18 0.00
6 85.29* 4.41 1.47 1.47 4.41 2.94 0.00
7 58.82* 7.35 0.00 1.47 2.94 29.41 0.00
8 1.47 1.47 38.24* 13.24 10.29 35.29 0.00
9 20.59* 4.41 5.88 5.88 2.94 60.29 0.00
10 2.94 23.53* 11.76 5.88 4.41 51.47 0.00
11 5.88* 7.35 1.47 13.24 32.35 39.71 0.00
12 20.59 13.24* 10.29 0.00 2.94 52.94 0.00
13 1.47 10.29* 2.94 7.35 1.47 76.47 0.00
14 7.35 5.88 14.71* 10.29 7.35 54.41 0.00
15 2.94 4.41 4.41* 4.41 1.47 82.35 0.00
16 14.71 11.76* 8.82 4.41 2.94 57.35 0.00
17 4.41 1.47 2.94* 4.41 1.47 85.29 0.00
18 4.41 5.88 1.47 10.29 5.88* 72.06 0.00
19 2.94 1.47* 5.88 5.88 1.47 82.35 0.00
20 29.41 17.65* 5.88 2.94 5.88 38.24 0.00
21 4.41 2.94 1.47 4.41 1.47* 85.29 0.00
22 8.82 8.82 1.47 8.82 0.00* 72.06 0.00
23 1.47* 1.47 2.94 1.47 1.47 91.18 0.00
24 0.00 4.41 5.88* 0.00 1.47 88.24 0.00
25 0.00 0.00* 5.88 5.88 1.47 86.76 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column