American Mathematics Competitions
2011 AMC 10 A Results for Montana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 390
Number of unofficial participants: 0
Average score of participants: 50.3
Average score for female students is: 47.9 ( 166 Students)
Average score for male students is: 53.5 ( 175 Students)
Average score for unspecified gender is 47.6 ( 49 Students)
Average score for grade 10 is: 52.1 ( 144 Students)
Average score for grade 9 is: 48.6 ( 199 Students)
Average score for grade 8 and below is: 63.4 ( 16 Students)
Average score with unknown grade: 46.9 ( 31 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 0
Number of schools returning results 12
Average school winning score 78.00
American Mathematics Competitions
2011 AMC 12 A Results for Montana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 403
Number of unofficial participants: 0
Average score of participants: 57.2
Average score for female students is: 55.1 ( 195 Students)
Average score for male students is: 59.3 ( 184 Students)
Average score for unspecified gender is 59.3 ( 24 Students)
Average score for grade 12 is: 58.4 ( 154 Students)
Average score for grade 11 is: 56.2 ( 209 Students)
Average score for grade 10 is: 61.8 ( 21 Students)
Average score for grade 9 is: 51.0 ( 7 Students)
Average score for grade 8 and below is: 79.5 ( 1 Student)
Average score with unknown grade: 55.0 ( 11 Students)
AIME qualifying score = 93.0 or better
Number of AIME qualifers 1
Number of schools returning results 14
Average school winning score 78.00
Average school team score 220.50
American Mathematics Competitions
2011 AMC 10 B Results for Montana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 266
Number of unofficial participants: 0
Average score of participants: 49.4
Average score for female students is: 46.2 ( 124 Students)
Average score for male students is: 52.7 ( 102 Students)
Average score for unspecified gender is 50.7 ( 40 Students)
Average score for grade 10 is: 50.3 ( 142 Students)
Average score for grade 9 is: 47.5 ( 107 Students)
Average score for grade 8 and below is: 81.6 ( 5 Students)
Average score with unknown grade: 42.0 ( 12 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 1
Number of schools returning results 10
Average school winning score 80.70
American Mathematics Competitions
2011 AMC 12 B Results for Montana
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 395
Number of unofficial participants: 0
Average score of participants: 49.8
Average score for female students is: 48.7 ( 163 Students)
Average score for male students is: 50.8 ( 203 Students)
Average score for unspecified gender is 49.0 ( 29 Students)
Average score for grade 12 is: 50.5 ( 152 Students)
Average score for grade 11 is: 48.5 ( 184 Students)
Average score for grade 10 is: 53.3 ( 38 Students)
Average score for grade 9 is: 52.7 ( 9 Students)
Average score with unknown grade: 47.3 ( 12 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 0
Number of schools returning results 10
Average school winning score 74.10
Average school team score 201.45
2011 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
276.0 1 1
238.5 1 2
237.0 1 1 3
235.5 1 5
228.0 3 6
225.0 1 9
220.5 1 10
210.0 1 11
208.5 1 1 12
205.5 1 1 14
204.0 1 16
199.5 1 17
198.0 1 18
196.5 1 2 19
195.0 1 22
172.5 1 23
151.5 1 24
2011 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
121.5 1
111.0 1
97.5 1 1
96.0 1
91.5 1 1
90.0 2 2
88.5 1 1 1
87.0 1
85.5 2
84.0 1 2
82.5 1 1
81.0 3 4 1
79.5 1 4 1
78.0 2 2 4 3
76.5 5 3 1 2
75.0 10 3 3
73.5 11 4 1 2
72.0 11 1 3 1
70.5 12 2 1 5
69.0 11 3 3 6
67.5 14 6 9 2
66.0 19 7 9 4
64.5 17 11 7 3
63.0 14 9 9 6
61.5 15 15 10 10
60.0 29 17 13 7
58.5 17 17 13 4
57.0 17 19 10 9
55.5 14 21 18 8
54.0 30 24 22 14
52.5 19 9 18 7
51.0 21 19 15 12
49.5 14 25 12 19
48.0 12 19 23 16
46.5 10 16 16 9
45.0 9 18 15 13
43.5 13 21 16 11
42.0 13 21 26 12
40.5 7 13 18 10
39.0 10 8 6 7
37.5 4 13 11 3
36.0 7 9 30 5
34.5 4 6 5
33.0 1 5 4 7
31.5 3 4 2 1
30.0 7 6 6
28.5 4 4 3
27.0 3 4 4
25.5 1 1 1
24.0 2 4 6
22.5 1 2 2
21.0 1 2 1
19.5 1
18.0 3 1 5
13.5 1
12.0 1 3
9.0 1
4.5 1
American Mathematics Competitions
2011 AMC 10 A Results for Montana
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 10 A Results for Montana
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 0.26 0.77 20.77 72.31* 3.85 2.05 0.00
2 0.77 0.26 2.31 15.38 79.49* 1.79 0.00
3 2.82 4.62 9.74 30.00* 4.62 48.21 0.00
4 33.59* 8.97 10.26 6.41 4.36 36.41 0.00
5 8.46 32.82 25.13* 6.67 2.05 24.87 0.00
6 16.67 8.72 11.79* 21.03 6.92 34.62 0.26
7 14.36 11.79* 53.08 3.08 1.79 15.90 0.00
8 5.90 35.38 35.90* 3.08 4.10 15.64 0.00
9 21.28* 8.97 6.92 5.38 3.85 53.59 0.00
10 8.97 14.87* 8.21 12.56 12.31 43.08 0.00
11 6.67 6.92* 9.74 7.44 4.62 64.62 0.00
12 63.85* 4.10 4.36 6.67 3.59 17.44 0.00
13 13.85* 12.31 14.62 11.28 3.08 44.87 0.00
14 13.59 13.59* 16.41 2.82 3.85 49.74 0.00
15 7.44 8.97 15.90* 5.13 2.56 60.00 0.00
16 22.82 6.41* 3.59 5.13 20.26 41.79 0.00
17 1.28 4.36 58.21* 4.36 2.31 29.49 0.00
18 9.23 4.87 2.05* 13.33 4.10 66.41 0.00
19 5.38 9.74 5.90 6.41 4.87* 67.69 0.00
20 7.95 4.87 9.49 3.85* 15.38 58.46 0.00
21 8.97 8.97 8.21 5.13* 7.69 61.03 0.00
22 5.38 7.18 8.46* 7.69 4.10 67.18 0.00
23 8.46 6.15 12.56* 7.44 9.23 56.15 0.00
24 2.31 5.38 4.62 2.56* 2.82 82.31 0.00
25 3.59 3.85 3.59* 5.38 2.56 81.03 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 Montana
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 12 A Results for Montana
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 0.50 0.25 13.65 83.37* 1.24 0.99 0.00
2 0.00 0.00 0.74 0.50 98.76* 0.00 0.00
3 0.25 1.49 1.99 14.39 81.64* 0.25 0.00
4 4.47 23.57 51.86* 4.22 1.49 14.39 0.00
5 3.97 30.02 47.89* 1.74 5.71 10.67 0.00
6 73.70* 2.48 1.99 4.96 1.24 15.63 0.00
7 3.97 22.83* 5.21 10.67 11.17 46.15 0.00
8 0.99 2.48 70.72* 1.99 1.24 22.58 0.00
9 7.94 13.15* 9.18 9.18 30.52 30.02 0.00
10 16.13 22.33* 14.64 3.72 1.74 41.44 0.00
11 7.20 4.71 5.46* 24.07 7.94 50.62 0.00
12 7.20 5.96 4.22 12.90* 32.01 37.72 0.00
13 39.70 3.23* 5.71 9.18 4.47 37.72 0.00
14 3.72 4.47 6.70 5.71 2.48* 76.92 0.00
15 5.46* 2.48 17.62 4.47 2.23 67.74 0.00
16 3.23 5.71 7.94* 8.68 6.45 67.99 0.00
17 6.45 4.47 6.70 3.97* 3.47 74.94 0.00
18 5.21 10.42 10.92 17.12* 1.99 54.34 0.00
19 3.72 5.21 6.45* 2.98 1.24 80.40 0.00
20 10.42 7.20 5.46* 3.47 3.72 69.73 0.00
21 1.49* 3.47 2.23 4.22 4.22 84.37 0.00
22 2.98 3.72 3.72* 4.22 0.74 84.62 0.00
23 2.48 4.96 5.96* 3.72 4.47 78.41 0.00
24 3.97 5.96 8.44* 5.21 8.68 67.74 0.00
25 7.44 3.97 4.71 3.23* 18.61 62.03 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 10 B Results for Montana
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 10 B Results for Montana
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 20.68 0.75 74.81* 0.75 0.00 3.01 0.00
2 14.66 1.88 4.51 11.28 65.04* 2.63 0.00
3 76.69* 5.26 4.89 5.26 2.63 5.26 0.00
4 13.53 2.26 41.73* 40.98 0.38 1.13 0.00
5 14.29 4.51 5.26 4.14 29.32* 42.48 0.00
6 60.90* 6.02 9.40 4.14 5.26 14.29 0.00
7 33.83 31.58* 7.89 4.51 8.27 13.91 0.00
8 41.73 54.89* 0.38 0.75 1.50 0.75 0.00
9 11.65 3.01 6.77 17.67* 8.65 52.26 0.00
10 11.28 12.78* 20.68 14.29 13.16 27.82 0.00
11 10.90 4.89 61.28 8.27* 3.01 11.65 0.00
12 8.65* 15.04 2.26 7.14 4.14 62.78 0.00
13 13.16 38.72 6.02 10.15* 10.15 21.80 0.00
14 13.91 7.14 17.67* 6.02 10.90 44.36 0.00
15 15.04 9.40 7.52 19.17 14.29* 34.59 0.00
16 5.64* 19.17 6.02 11.65 2.63 54.89 0.00
17 12.03 6.77 11.28* 15.41 6.02 48.50 0.00
18 1.13 6.39 31.95 24.06 4.89* 31.58 0.00
19 5.26* 9.40 5.64 12.78 6.39 60.53 0.00
20 5.26 5.64 12.41* 4.14 10.15 62.41 0.00
21 16.92 7.89* 6.39 4.14 2.26 62.41 0.00
22 3.76* 7.14 6.39 3.01 4.51 75.19 0.00
23 36.84 5.26 5.26 3.76* 3.01 45.86 0.00
24 6.02 6.02* 7.14 4.14 8.65 68.05 0.00
25 3.01 4.89 3.76 5.64* 2.63 80.08 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 Montana
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ?
American Mathematics Competitions
2011 AMC 12 B Results for Montana
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 3.80 1.01 90.38* 2.28 0.51 1.77 0.25
2 7.34 2.78 3.54 2.28 81.77* 2.28 0.00
3 6.08 4.30 53.16* 34.68 0.51 1.01 0.25
4 4.56 3.54 2.28 6.58 48.35* 34.68 0.00
5 33.42* 2.03 2.03 35.70 14.43 12.15 0.25
6 1.27 9.87 15.44* 5.82 14.18 53.42 0.00
7 12.91 41.52* 2.78 9.62 2.78 30.13 0.25
8 14.18* 10.38 3.54 5.57 2.03 64.30 0.00
9 13.42 28.35 6.33 16.96* 9.11 25.57 0.25
10 1.77 7.09 28.35 27.09 7.09* 28.35 0.25
11 14.43 22.78* 8.35 11.14 3.04 40.00 0.25
12 10.38* 14.68 11.39 6.84 1.52 54.94 0.25
13 4.30 5.57* 5.32 4.81 0.76 79.24 0.00
14 2.03 3.54 2.28 2.28* 9.37 80.51 0.00
15 8.10 7.09 5.06 9.87* 4.30 65.32 0.25
16 2.78 10.63 8.86* 3.54 3.80 70.13 0.25
17 2.28 3.80* 5.82 3.29 2.03 82.28 0.51
18 1.52* 4.30 4.56 3.29 5.06 80.76 0.51
19 8.86 3.80* 6.84 4.81 3.29 71.90 0.51
20 4.30 3.29 3.80* 3.04 5.06 80.25 0.25
21 5.06 5.32 5.06 2.78* 1.52 79.75 0.51
22 4.30 2.78 5.06 3.29* 2.28 81.77 0.51
23 6.33 5.82 4.81* 6.58 5.57 70.38 0.51
24 3.04 2.28* 3.54 4.30 3.29 83.29 0.25
25 3.54 5.32 4.81 3.29* 2.53 80.25 0.25
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column
