American Mathematics Competitions
2008 AMC 10 A Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 336
Number of unofficial participants: 0
Average score of participants: 49.0
Average score for female students is: 46.6 ( 138 Students)
Average score for male students is: 50.9 ( 157 Students)
Average score for unspecified gender is 49.6 ( 41 Students)
Average score for grade 10 is: 49.9 ( 227 Students)
Average score for grade 9 is: 45.5 ( 80 Students)
Average score with unknown grade: 51.4 ( 29 Students)
AIME qualifying score = 117.0 or better
Number of AIME qualifers 0
Number of schools returning results 12
Average school winning score 79.13
American Mathematics Competitions
2008 AMC 12 A Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 502
Number of unofficial participants: 0
Average score of participants: 59.0
Average score for female students is: 53.9 ( 192 Students)
Average score for male students is: 62.8 ( 221 Students)
Average score for unspecified gender is 60.5 ( 89 Students)
Average score for grade 12 is: 61.3 ( 195 Students)
Average score for grade 11 is: 57.2 ( 229 Students)
Average score for grade 10 is: 51.2 ( 20 Students)
Average score for grade 9 is: 41.0 ( 3 Students)
Average score with unknown grade: 61.9 ( 55 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 2
Number of schools returning results 16
Average school winning score 85.78
Average school team score 241.78
American Mathematics Competitions
2008 AMC 10 B Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 55
Number of unofficial participants: 0
Average score of participants: 49.9
Average score for female students is: 48.6 ( 29 Students)
Average score for male students is: 48.9 ( 20 Students)
Average score for unspecified gender is 59.3 ( 6 Students)
Average score for grade 10 is: 51.4 ( 34 Students)
Average score for grade 9 is: 38.3 ( 14 Students)
Average score for grade 8 and below is: 72.4 ( 4 Students)
Average score with unknown grade: 57.0 ( 3 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 0
Number of schools returning results 3
Average school winning score 82.00
American Mathematics Competitions
2008 AMC 12 B Results for Idaho
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 100
Number of unofficial participants: 0
Average score of participants: 56.6
Average score for female students is: 52.8 ( 48 Students)
Average score for male students is: 61.2 ( 46 Students)
Average score for unspecified gender is 51.8 ( 6 Students)
Average score for grade 12 is: 58.3 ( 39 Students)
Average score for grade 11 is: 55.1 ( 51 Students)
Average score for grade 10 is: 58.3 ( 6 Students)
Average score for grade 9 is: 76.5 ( 1 Student)
Average score with unknown grade: 49.5 ( 3 Students)
AIME qualifying score = 97.5 or better
Number of AIME qualifers 1
Number of schools returning results 6
Average school winning score 81.50
Average school team score 230.75
2008 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
286.5 1 1
285.0 1 2
283.5 1 3
273.0 1 4
256.5 2 5
249.0 1 1 7
246.0 1 9
244.5 1 10
243.0 1 11
240.0 1 12
235.5 2 13
232.5 1 15
225.0 1 16
220.5 1 17
219.0 1 1 18
195.0 1 20
192.0 1 21
166.5 1 22
2008 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
109.5 3
106.5 1
102.0 1 1
100.5 1
99.0 1 1
96.0 1 1
94.5 2
93.0 1
91.5 1 1
90.0 1 2
88.5 2
87.0 3 1
85.5 9
84.0 5 1 3
82.5 13 2 1
81.0 8 2 1
79.5 12 2
78.0 10 3
76.5 5 3 3
75.0 10 4 2 2
73.5 9 1 3 1
72.0 12 6 6
70.5 20 1 2
69.0 17 3 4 2
67.5 17 5 2
66.0 20 1 4 1
64.5 15 1 1 2
63.0 18 3 12 3
61.5 10 6 1
60.0 20 7 10 1
58.5 13 2 6 1
57.0 18 5 13 1
55.5 16 4 11 3
54.0 18 7 10
52.5 23 2 9
51.0 20 5 10 1
49.5 15 4 7 1
48.0 13 3 13 1
46.5 21 1 14
45.0 20 3 17 1
43.5 9 2 17 1
42.0 17 6 16 2
40.5 15 3 27 2
39.0 6 1 24 1
37.5 5 4 15 2
36.0 6 3 7 3
34.5 5 15 1
33.0 4 1 12
31.5 4 1 8 1
30.0 8 3 3 3
28.5 1 4 1
27.0 1 1
25.5 1 1
24.0 3 4
22.5 1
19.5 1
18.0 1 1
16.5 1 1
12.0 2
American Mathematics Competitions
2008 AMC 10 A Results for Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
109.5 2 1 1 2
102.0 1 1
99.0 1 1
96.0 1 1
90.0 1 1 1
84.0 2 1 1 2
82.5 1 1
81.0 1 1
78.0 1 1 1 1
75.0 1 1 1
73.5 2 1 2
72.0 2 3 1 4 1
70.5 1 1 2
69.0 3 1 2 2
67.5 3 1 4 1
66.0 1 3 4
64.5 1
63.0 6 5 12
61.5 4 2 3 1
60.0 6 4 2 7 1
58.5 2 4 1 4 1
57.0 5 6 3 9 1
55.5 9 2 2 9
54.0 3 6 1 8 1
52.5 5 3 1 8
51.0 7 1 2 7 1
49.5 3 4 7
48.0 8 3 3 8 2
46.5 5 7 2 11 1
45.0 11 6 3 14
43.5 6 8 1 14 2
42.0 10 5 3 11 2
40.5 12 12 7 18 2
39.0 8 12 9 12 3
37.5 9 5 6 8 1
36.0 3 4 2 5
34.5 5 7 5 9 1
33.0 2 8 5 7
31.5 3 4 3 3 2
30.0 3 1 2
28.5 1 3 3 1
27.0 1 1
25.5 1 1
24.0 1 2 1
18.0 1 1
16.5 1 1
American Mathematics Competitions
2008 AMC 10 A Results for Idaho
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 2.38 1.19 9.23 77.08* 6.85 3.27 0.00
2 33.33* 16.07 27.38 1.19 1.79 20.24 0.00
3 50.89* 7.14 2.98 1.49 2.68 34.82 0.00
4 4.76 3.87 44.05* 7.74 8.33 30.95 0.30
5 4.17 16.96* 2.08 1.79 2.68 72.32 0.00
6 3.27 2.98 2.68 9.82* 38.39 42.86 0.00
7 45.83 2.38 2.08 2.38 6.55* 40.77 0.00
8 29.76* 5.06 1.79 18.45 3.57 41.37 0.00
9 4.46 20.24* 11.90 18.75 3.87 40.77 0.00
10 1.49 38.10 6.25 1.79 27.08* 25.30 0.00
11 3.57 3.87 3.27 50.30* 8.93 30.06 0.00
12 11.01 2.08 15.77* 4.76 4.17 62.20 0.00
13 16.07 25.89 8.04 16.96* 2.98 29.76 0.30
14 1.19 4.76 4.17 9.52* 4.46 75.89 0.00
15 2.98 2.98 23.21 13.39* 7.74 49.70 0.00
16 1.49 4.46* 2.38 15.18 5.36 71.13 0.00
17 4.46 3.57* 2.38 3.57 3.27 82.74 0.00
18 1.79 3.57* 2.98 1.79 2.98 86.90 0.00
19 2.38 3.57 5.36* 2.08 1.79 84.82 0.00
20 1.79 3.87 8.04 4.17* 1.49 80.65 0.00
21 8.04* 11.90 2.98 3.87 2.38 70.83 0.00
22 5.36 3.57 14.58 12.20* 9.23 55.06 0.00
23 4.76 3.57* 4.17 3.57 1.19 82.74 0.00
24 4.17 2.98 5.95 2.98* 6.25 77.68 0.00
25 2.08 5.06 2.98* 2.98 4.17 82.74 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 Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
102.0 1 1
100.5 1 1
94.5 1 1 1
93.0 1 1
91.5 1
90.0 1 1
88.5 1 1 1
87.0 2 1 1 2
85.5 8 1 4 5
84.0 4 1 3 1
82.5 6 3 7 2 4
81.0 7 1 2 4 2
79.5 7 2 4 7 1
78.0 7 4 5 1
76.5 3 2 2 3
75.0 6 2 9 1
73.5 4 2 4 4 1
72.0 5 3 1 7 3 1
70.5 9 8 9 10 1
69.0 8 3 6 7 4
67.5 9 6 5 11 1
66.0 9 8 2 9 6 3
64.5 8 2 1 5 4 5
63.0 10 8 1 9 8
61.5 7 3 7 3
60.0 10 8 14 5 1
58.5 8 5 8 5
57.0 8 7 11 7
55.5 7 5 1 7 5 3
54.0 6 7 1 7 8 2
52.5 5 11 1 11 8 3
51.0 5 12 1 8 9 2
49.5 4 8 1 7 4 3
48.0 5 7 1 5 6 1
46.5 4 10 1 8 9 3
45.0 9 9 9 9 2
43.5 2 7 2 4 3
42.0 4 10 9 6 2
40.5 6 7 1 2 11 1
39.0 2 4 4 2
37.5 1 2 1 3 1
36.0 3 3 4 2
34.5 2 3 1 4
33.0 4 1 2 1
31.5 2 2 3 1
30.0 2 4 1 1 2 3 1
28.5 1 1
27.0 1
22.5 1 1
19.5 1 1
American Mathematics Competitions
2008 AMC 12 A Results for Idaho
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 2.19 0.80 6.37 85.06* 4.38 1.20 0.00
2 90.64* 2.99 1.99 0.40 3.39 0.60 0.00
3 2.99 7.37 63.94* 5.78 4.98 14.94 0.00
4 5.78 35.86* 5.18 5.58 3.98 43.63 0.00
5 1.20 33.27* 10.76 25.90 5.38 23.51 0.00
6 50.80* 6.57 1.39 25.30 2.19 13.75 0.00
7 3.98 2.39 4.18 65.94* 5.98 17.53 0.00
8 4.98 6.37 46.41* 3.78 14.54 23.90 0.00
9 2.99 10.16 5.98 23.71* 4.78 52.39 0.00
10 12.55 30.88 13.35 22.31* 2.19 18.73 0.00
11 3.78 5.58 53.39* 5.78 3.19 28.29 0.00
12 8.76 16.14* 6.77 7.37 4.38 56.57 0.00
13 3.98 14.34* 6.37 21.91 5.58 47.81 0.00
14 8.17* 5.58 2.99 4.78 2.59 75.90 0.00
15 6.77 10.76 7.77 3.78* 8.17 62.75 0.00
16 1.59 4.78 4.58 4.78* 1.39 82.87 0.00
17 0.80 3.78 4.98 5.58* 3.39 81.47 0.00
18 1.00 3.39 4.38* 0.60 5.58 85.06 0.00
19 1.39 4.58 4.38* 3.98 1.99 83.67 0.00
20 0.60 2.79 2.19 1.79 3.59* 89.04 0.00
21 4.38 3.39 2.59 4.38* 1.79 83.47 0.00
22 1.99 4.98 4.58* 4.38 4.38 79.68 0.00
23 1.79 1.79 1.79 2.59* 1.39 90.64 0.00
24 2.99 9.76 6.37 1.99* 7.57 71.31 0.00
25 2.19 2.19 3.19 4.18* 1.59 86.65 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 Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 ?
----------------------------------------------------------------------------------------
106.5 1 1
79.5 1 1 1
76.5 3 2 1
75.0 2 2
73.5 1 1
69.0 1 1 1
67.5 1 1 1
66.0 1 1
64.5 1 1 1 1
63.0 2 1 3
61.5 1 1
60.0 1
58.5 1 1
57.0 1 1
55.5 1 2 1 2
51.0 1 1
49.5 1 1
48.0 1 1
45.0 1
43.5 1 1
42.0 2 2
40.5 1 1 2
39.0 1 1
37.5 2 1 1
36.0 1 2 1 2
34.5 1
31.5 1 1
30.0 1 2 2 1
28.5 1 1
24.0 3 1 2 2
18.0 1 1
16.5 1 1
12.0 1 1 1 1
American Mathematics Competitions
2008 AMC 10 B Results for Idaho
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 5.45 9.09 3.64 9.09 70.91* 1.82 0.00
2 14.55 60.00* 5.45 5.45 0.00 14.55 0.00
3 12.73 14.55 14.55 20.00* 3.64 34.55 0.00
4 27.27 10.91 40.00* 5.45 1.82 14.55 0.00
5 34.55* 10.91 7.27 1.82 5.45 40.00 0.00
6 12.73 7.27 23.64* 14.55 5.45 36.36 0.00
7 14.55 14.55 43.64* 10.91 1.82 14.55 0.00
8 1.82 14.55 49.09* 18.18 5.45 10.91 0.00
9 14.55* 5.45 9.09 5.45 16.36 49.09 0.00
10 12.73* 9.09 5.45 5.45 12.73 54.55 0.00
11 1.82 9.09* 7.27 14.55 5.45 61.82 0.00
12 54.55* 7.27 10.91 12.73 1.82 12.73 0.00
13 29.09 5.45* 5.45 7.27 1.82 50.91 0.00
14 9.09 9.09* 5.45 12.73 3.64 60.00 0.00
15 9.09* 7.27 16.36 3.64 5.45 58.18 0.00
16 20.00* 20.00 7.27 12.73 1.82 38.18 0.00
17 14.55 1.82* 20.00 9.09 12.73 41.82 0.00
18 14.55 14.55* 9.09 5.45 1.82 54.55 0.00
19 10.91 0.00 16.36 7.27 0.00* 65.45 0.00
20 5.45 29.09* 9.09 7.27 7.27 41.82 0.00
21 12.73 12.73 5.45* 7.27 7.27 54.55 0.00
22 9.09 10.91 32.73* 7.27 7.27 32.73 0.00
23 7.27 3.64* 7.27 9.09 5.45 67.27 0.00
24 21.82 7.27 7.27* 10.91 1.82 50.91 0.00
25 20.00 7.27* 10.91 7.27 5.45 49.09 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 Idaho
SCORE DISTRIBUTION
score ----gender----------- -----------grade-----------------
male female ? <=6 7 8 9 10 11 12 13 ?
----------------------------------------------------------------------------------------
99.0 1 1
96.0 1 1
91.5 1 1
87.0 1 1
84.0 1 1
82.5 2 1 1
81.0 2 2
76.5 2 1 1 1 1
75.0 3 1 1 3
73.5 1 1
72.0 3 3 1 4 1
70.5 1 1
69.0 2 1 2
66.0 1 1
64.5 1 1
63.0 1 2 2 1
60.0 5 2 3 4
58.5 2 1 1
57.0 3 2 2 3
55.5 2 2 1 2 1
54.0 1 5 1 3 2 1
52.5 1 1 1
51.0 1 4 1 4
49.5 1 2 3 1
48.0 1 2 1 2
46.5 1 1
45.0 1 2 1 2
43.5 1 2
42.0 2 3 4 1 1
40.5 1 2 1 2
39.0 1 1
37.5 1 3 1 3
36.0 3 1 2
33.0 1 1
31.5 1 1
30.0 3 3
25.5 1 1
American Mathematics Competitions
2008 AMC 12 B Results for Idaho
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 1.00 1.00 3.00 15.00 76.00* 4.00 0.00
2 4.00 78.00* 5.00 4.00 1.00 8.00 0.00
3 14.00 16.00 60.00* 2.00 1.00 7.00 0.00
4 2.00 3.00 9.00 63.00* 5.00 18.00 0.00
5 4.00 8.00 51.00* 11.00 7.00 19.00 0.00
6 72.00* 8.00 5.00 3.00 2.00 10.00 0.00
7 51.00* 12.00 2.00 5.00 7.00 23.00 0.00
8 11.00 4.00 49.00* 10.00 4.00 22.00 0.00
9 17.00* 8.00 5.00 12.00 11.00 47.00 0.00
10 9.00 26.00* 6.00 7.00 2.00 50.00 0.00
11 6.00* 11.00 6.00 6.00 31.00 40.00 0.00
12 28.00 12.00* 9.00 3.00 9.00 39.00 0.00
13 3.00 13.00* 8.00 5.00 6.00 65.00 0.00
14 6.00 7.00 16.00* 8.00 4.00 59.00 0.00
15 0.00 8.00 7.00* 8.00 10.00 67.00 0.00
16 19.00 13.00* 10.00 6.00 2.00 50.00 0.00
17 6.00 6.00 7.00* 12.00 3.00 66.00 0.00
18 6.00 7.00 10.00 10.00 9.00* 58.00 0.00
19 13.00 10.00* 7.00 10.00 5.00 55.00 0.00
20 24.00 12.00* 20.00 5.00 4.00 35.00 0.00
21 7.00 8.00 9.00 5.00 5.00* 66.00 0.00
22 6.00 11.00 9.00 11.00 13.00* 50.00 0.00
23 3.00* 10.00 9.00 11.00 1.00 66.00 0.00
24 4.00 9.00 4.00* 6.00 5.00 72.00 0.00
25 2.00 4.00* 9.00 10.00 6.00 69.00 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column