American Mathematics Competitions
2009 AMC 10 A Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 289
Number of unofficial participants: 0
Average score of participants: 60.0
Average score for female students is: 56.5 ( 120 Students)
Average score for male students is: 65.3 ( 123 Students)
Average score for unspecified gender is 54.9 ( 46 Students)
Average score for grade 10 is: 59.1 ( 186 Students)
Average score for grade 9 is: 62.7 ( 93 Students)
Average score with unknown grade: 52.5 ( 10 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 1
Number of schools returning results 12
Average school winning score 95.25
American Mathematics Competitions
2009 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: 58.3
Average score for female students is: 56.0 ( 150 Students)
Average score for male students is: 61.7 ( 152 Students)
Average score for unspecified gender is 54.9 ( 48 Students)
Average score for grade 12 is: 60.0 ( 170 Students)
Average score for grade 11 is: 57.5 ( 159 Students)
Average score for grade 10 is: 52.2 ( 5 Students)
Average score with unknown grade: 50.5 ( 16 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 5
Number of schools returning results 12
Average school winning score 90.50
Average school team score 230.13
American Mathematics Competitions
2009 AMC 10 B Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 56
Number of unofficial participants: 0
Average score of participants: 56.2
Average score for female students is: 46.8 ( 29 Students)
Average score for male students is: 67.9 ( 21 Students)
Average score for unspecified gender is 60.8 ( 6 Students)
Average score for grade 10 is: 63.3 ( 30 Students)
Average score for grade 9 is: 47.5 ( 17 Students)
Average score for grade 8 and below is: 36.0 ( 1 Student)
Average score with unknown grade: 50.8 ( 8 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 3
Number of schools returning results 6
Average school winning score 93.50
American Mathematics Competitions
2009 AMC 12 B Results for Alaska
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 130
Number of unofficial participants: 0
Average score of participants: 55.8
Average score for female students is: 53.3 ( 58 Students)
Average score for male students is: 57.8 ( 50 Students)
Average score for unspecified gender is 58.2 ( 22 Students)
Average score for grade 12 is: 57.1 ( 54 Students)
Average score for grade 11 is: 54.6 ( 66 Students)
Average score for grade 10 is: 59.3 ( 2 Students)
Average score with unknown grade: 56.8 ( 8 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 3
Number of schools returning results 6
Average school winning score 74.25
Average school team score 200.25
2009 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
318.0 1 1
310.5 1 2
286.5 1 3
276.0 1 4
271.5 1 5
258.0 1 6
243.0 2 7
240.0 1 9
231.0 1 10
223.5 1 11
189.0 1 12
168.0 1 13
160.5 1 14
154.5 1 15
150.0 1 16
121.5 1 17
118.5 1 18
2009 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
130.5 1
127.5 1
121.5 1
120.0 2
118.5 2
109.5 1
108.0 1 1
106.5 1
103.5 1
100.5 1 2
99.0 2
97.5 1
96.0 1
94.5 1 3
93.0 1 1
91.5 3 1 4
90.0 4
88.5 1 2
87.0 1 1 4 1
85.5 2 1 3
84.0 2 3 1
82.5 3 1 1
81.0 1 1 3
79.5 1 2 2
78.0 5 4 1
76.5 4 1 1 1
75.0 5 3 8
73.5 8 2 2
72.0 22 3 11
70.5 6 3 13
69.0 8 2 10
67.5 12 3 7 1
66.0 14 4 11 4
64.5 9 2 5 2
63.0 19 15
61.5 13 4 7 4
60.0 14 8 9 3
58.5 15 2 9 1
57.0 14 2 9 1
55.5 18 6 14 2
54.0 18 2 21 2
52.5 15 12 5 2
51.0 10 6 11 3
49.5 9 6 11 2
48.0 20 6 14 5
46.5 4 5 7
45.0 15 3 10 1
43.5 9 3 4 1
42.0 11 3 7 2
40.5 4 4 5
39.0 3 2 2 2
37.5 1 8 4
36.0 9 3 2 3
34.5 2 2 5 1
33.0 4
31.5 3 1 1
30.0 2 2 5 1
28.5 2 1 1
27.0 1 2 2
25.5 1 2
24.0 1 2 1
19.5 1
18.0 1
13.5 1
American Mathematics Competitions
2009 AMC 10 A Results for Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
127.5 1 1
108.0 1 1
106.5 1 1
103.5 1
99.0 2 2
97.5 1 1
96.0 1 1
93.0 1 1
91.5 2 1 2 2
90.0 2 1 4
88.5 2 1 1
87.0 3 1 1 3
85.5 1 2 2 1
84.0 2 1 2 1
82.5 1 1
81.0 2 1 2
79.5 2 1 1
78.0 2 2 1 3
76.5 1 1
75.0 5 2 2 6
73.5 2 2
72.0 5 5 8 3
70.5 6 4 3 10
69.0 8 2 4 6
67.5 4 3 3 4
66.0 6 5 4 7
64.5 3 1 4 1
63.0 9 5 4 11
61.5 2 5 3 4
60.0 5 3 1 7 1
58.5 3 4 3 5 1
57.0 4 2 5 4
55.5 6 7 4 9 1
54.0 5 14 9 11 1
52.5 2 1 4
51.0 4 4 2 8 1
49.5 2 6 3 7 1
48.0 6 5 6 8
46.5 2 3 7
45.0 4 4 9 1
43.5 2 1 1 2
42.0 2 5 1 6
40.5 1 2 1 4
39.0 1 2
37.5 1 2 1 3
36.0 1 1 1
34.5 2 1 2 3
31.5 1 1
30.0 5 1 4
28.5 1
24.0 2 2
18.0 1 1
13.5 1 1
American Mathematics Competitions
2009 AMC 10 A Results for Alaska
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 0.35 0.35 0.00 12.11 86.85* 0.00 0.35
2 90.31* 1.73 0.69 1.73 2.08 3.46 0.00
3 1.38 16.61 62.28* 4.84 5.54 9.34 0.00
4 19.72* 8.65 3.81 6.92 19.38 41.52 0.00
5 13.84 3.11 7.96 3.11 40.83* 31.14 0.00
6 61.59* 5.19 6.23 2.77 0.69 23.53 0.00
7 3.46 2.77 18.69* 3.81 39.79 31.14 0.35
8 12.11 70.24* 3.46 1.38 2.08 10.73 0.00
9 10.03 7.96* 7.61 2.42 1.73 70.24 0.00
10 3.11 17.30* 3.46 11.76 1.73 62.63 0.00
11 1.73 4.50 4.15 40.48* 2.77 46.37 0.00
12 4.15 5.54 18.69* 5.54 6.57 59.52 0.00
13 18.34 7.96 3.46 12.11 11.07* 47.06 0.00
14 30.10* 1.38 1.38 5.19 18.69 43.25 0.00
15 3.46 3.46 3.11 8.30 45.33* 36.33 0.00
16 22.15 2.42 3.11 5.54* 7.61 58.82 0.35
17 4.15 5.19 4.50* 1.04 4.50 80.62 0.00
18 16.96 7.96 7.61 8.30* 10.38 48.79 0.00
19 5.88 8.30* 4.50 4.84 1.38 75.09 0.00
20 6.57 10.03 9.00 28.72* 1.73 43.94 0.00
21 2.77 1.04 8.30* 3.11 2.77 82.01 0.00
22 5.19 6.23 32.53 2.77* 3.11 50.17 0.00
23 2.77 1.38 4.50 2.08 9.69* 79.58 0.00
24 10.03 14.53 4.15* 4.84 6.23 60.21 0.00
25 4.15 4.50* 4.50 2.77 3.81 80.28 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 Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
121.5 1 1
118.5 1 1 1
108.0 1 1
100.5 1 1
94.5 1 1
91.5 2 1 1 1 1
88.5 1
87.0 1 1
85.5 1 1 1
84.0 1 1 2
82.5 2 1 2 1
81.0 1 1
79.5 1 1
78.0 3 2 2 3
76.5 2 2 4
75.0 5 4 1
73.5 6 1 4 3 1
72.0 13 9 9 12 1
70.5 4 2 3 3
69.0 5 3 6 2
67.5 4 7 10 2
66.0 6 7 5 9
64.5 4 3 4 4 1
63.0 11 5 7 11 1
61.5 6 4 5 8
60.0 4 7 2 12
58.5 3 11 1 4 10
57.0 7 5 6 8
55.5 10 4 9 8 1
54.0 7 9 1 12 4 1
52.5 6 7 1 4 10
51.0 3 6 6 4
49.5 2 6 6 3
48.0 4 9 2 7 10 1
46.5 1 3 2 2
45.0 6 7 9 6
43.5 4 4 3 5 1
42.0 5 5 5 5 1
40.5 4 4
39.0 2 1 3
37.5 1 1
36.0 2 4 3 3 3
34.5 2 1 1
33.0 1 2 3 1
31.5 1 2 1
30.0 1 1 1 1
28.5 1 1 1
27.0 1 1
24.0 1 1
19.5 1 1
American Mathematics Competitions
2009 AMC 12 A Results for Alaska
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 76.86* 8.57 2.57 0.57 3.43 8.00 0.00
2 2.00 7.43 81.43* 5.43 1.14 2.57 0.00
3 8.00 68.29* 4.57 8.00 3.14 8.00 0.00
4 90.86* 2.00 1.14 0.57 1.71 3.71 0.00
5 2.29 4.00 2.00 66.00* 2.00 23.71 0.00
6 22.29 5.43 4.29 17.71 18.86* 31.43 0.00
7 3.43 7.14* 5.71 3.43 2.57 77.71 0.00
8 44.57* 1.71 4.00 6.29 14.29 29.14 0.00
9 3.71 2.86 3.71 16.86* 6.29 66.29 0.29
10 3.14 6.57 28.57* 10.29 6.57 44.86 0.00
11 2.29 2.86 5.14 3.14 61.43* 24.86 0.29
12 12.29 17.43* 4.86 7.43 4.00 54.00 0.00
13 9.43 13.43 10.00 11.14* 5.43 50.57 0.00
14 3.71 2.86* 8.29 10.57 6.57 68.00 0.00
15 9.43 6.86 10.29 8.57* 2.00 62.86 0.00
16 11.71 9.71 4.86 5.71* 2.00 66.00 0.00
17 2.86 3.43 4.29* 5.43 8.29 75.71 0.00
18 6.86 5.14* 6.29 1.71 3.71 76.29 0.00
19 6.00 9.14 3.71* 8.29 5.43 67.43 0.00
20 3.71 1.71 6.00 4.00 8.00* 76.57 0.00
21 4.00 4.29 5.71* 1.14 5.43 79.43 0.00
22 2.00 4.57 4.29 3.43 2.29* 83.43 0.00
23 1.14 2.86 2.00 2.00* 1.71 90.29 0.00
24 9.43 5.71 2.57 3.71 0.57* 78.00 0.00
25 3.14* 3.71 3.14 7.43 8.57 74.00 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 Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
130.5 1 1
120.0 2 2
87.0 1 1
84.0 1
82.5 1 1
78.0 1 1
76.5 1 1
67.5 1 1
66.0 2 1 1 2 1
64.5 1 1 1 1
61.5 1 3 2 2
60.0 2 2 1
58.5 1
57.0 1 1
55.5 1 1 2
54.0 2 1 1
52.5 1 1 1 1
51.0 2 1 1 1
49.5 1 1 1 1
48.0 2 3 2 3
45.0 1
43.5 1 1
42.0 2 2
39.0 2 2
36.0 1 2 1 2
34.5 1 1
30.0 1 1
27.0 2 1 1
25.5 2 2
24.0 1 1
American Mathematics Competitions
2009 AMC 10 B Results for Alaska
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 44.64* 7.14 28.57 16.07 3.57 0.00
2 5.36 5.36 76.79* 1.79 1.79 8.93 0.00
3 5.36 10.71 51.79* 17.86 5.36 8.93 0.00
4 5.36 8.93 58.93* 14.29 3.57 8.93 0.00
5 8.93 12.50 26.79 41.07* 5.36 5.36 0.00
6 1.79 5.36 8.93 51.79* 12.50 19.64 0.00
7 12.50 7.14 53.57* 17.86 5.36 3.57 0.00
8 12.50 17.86* 14.29 42.86 8.93 3.57 0.00
9 33.93* 7.14 5.36 17.86 10.71 25.00 0.00
10 26.79 5.36 5.36 1.79 30.36* 30.36 0.00
11 41.07* 14.29 16.07 10.71 3.57 14.29 0.00
12 28.57* 21.43 1.79 16.07 14.29 17.86 0.00
13 3.57 16.07 32.14* 16.07 14.29 17.86 0.00
14 7.14 19.64 26.79 12.50* 10.71 23.21 0.00
15 10.71 12.50 17.86 8.93 21.43* 28.57 0.00
16 8.93 19.64* 5.36 3.57 8.93 53.57 0.00
17 28.57 14.29 21.43* 3.57 1.79 30.36 0.00
18 3.57 8.93 14.29 12.50* 5.36 55.36 0.00
19 17.86* 25.00 8.93 8.93 8.93 30.36 0.00
20 7.14 10.71* 10.71 5.36 8.93 57.14 0.00
21 8.93 19.64 5.36 19.64* 3.57 42.86 0.00
22 10.71 8.93* 8.93 10.71 1.79 58.93 0.00
23 8.93 10.71 16.07* 10.71 7.14 46.43 0.00
24 26.79* 7.14 5.36 8.93 5.36 46.43 0.00
25 16.07 17.86* 14.29 8.93 7.14 35.71 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 Alaska
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
109.5 1 1
100.5 1 1 2
94.5 2 2 1
93.0 1 1
91.5 1
87.0 1 1
85.5 1
81.0 1 1
79.5 1 1 1 1
76.5 1 1
75.0 1 2 1 2
73.5 1 1 1 1
72.0 1 3
70.5 1 2 1 2
69.0 1 1 1
67.5 1 1 2 1
66.0 1 2 2 2
64.5 1 2
61.5 3 1 3 1
60.0 4 4 5 3
58.5 1 1 1
57.0 1 1 1
55.5 4 2 2 4
54.0 1 1 2
52.5 4 7 8 3 1
51.0 3 1 5 1
49.5 2 4 1 2 3
48.0 1 3 1 3 2
46.5 1 3 3 2
45.0 3 1 1 1
43.5 2 1 1 1
42.0 2 3
40.5 1 2 1 3
39.0 2 1 1
37.5 4 4 6 2
36.0 1 2 2 1
34.5 2 1 1
31.5 1
30.0 2 1 1
28.5 1
27.0 2 1 1
25.5 1 1
American Mathematics Competitions
2009 AMC 12 B Results for Alaska
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 73.85* 6.15 12.31 5.38 0.77 1.54
2 0.00 5.38 66.92* 16.92 2.31 8.46 0.00
3 7.69 0.77 25.38 47.69* 3.08 15.38 0.00
4 2.31 4.62 71.54* 10.77 3.08 7.69 0.00
5 0.00 3.85 6.92 63.85* 2.31 23.08 0.00
6 14.62 20.00 35.38* 15.38 8.46 4.62 1.54
7 3.08 30.77* 8.46 28.46 2.31 26.92 0.00
8 13.85 10.00 1.54 6.15 46.15* 22.31 0.00
9 31.54* 3.08 7.69 8.46 3.85 45.38 0.00
10 21.54* 16.92 14.62 10.00 6.15 30.77 0.00
11 4.62 22.31 15.38 16.15* 11.54 30.00 0.00
12 5.38 3.85 7.69 4.62 19.23* 59.23 0.00
13 6.15 5.38 6.92 10.77* 3.85 66.92 0.00
14 22.31 11.54 19.23* 2.31 0.77 43.85 0.00
15 0.77 28.46* 16.92 8.46 3.85 41.54 0.00
16 2.31 3.08* 6.15 3.85 0.77 83.85 0.00
17 14.62 13.85* 13.85 4.62 10.00 43.08 0.00
18 6.92 9.23 6.92* 10.00 3.85 63.08 0.00
19 3.08 1.54 2.31 3.08 3.85* 86.15 0.00
20 0.77 5.38 3.08* 3.08 3.85 83.85 0.00
21 4.62* 6.15 4.62 18.46 14.62 51.54 0.00
22 3.08 2.31 2.31* 2.31 2.31 87.69 0.00
23 2.31 3.08 6.92 3.85* 1.54 82.31 0.00
24 6.92 10.00* 1.54 3.85 1.54 76.15 0.00
25 3.08 2.31 4.62 3.85 4.62* 81.54 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column