2005 State Report for Missouri
Number of schools returning results 52
Average of school highest score 17.21
Average school team score 47.13
# of State Student Participants 3085
Overall State Average Score 9.61
Average Score by Grade level
Grade # of Students Average
5th 24 7.29
6th 225 8.32
7th 843 9.02
8th 1934 10.09
Number of Female Students 1453
Average Score of Female Students 9.15
Average Female Scores by Grade
Grade # of Students Average
5th 8 6.38
6th 109 7.62
7th 392 8.43
8th 929 9.67
Number of Male Participants 1554
Average Score of Male Participants 10.03
Average score for Males by Grade
Grade # of Students Average
5th 16 7.75
6th 113 8.96
7th 435 9.54
8th 962 10.46
2005 American Mathematics Contest 8
Number of Students Achieving Indicated Score
SCORE MALE FEMALE TOTAL*
25 0 0 0
24 3 0 3
23 2 0 2
22 2 2 4
21 12 3 16
20 5 4 10
19 13 5 18
18 21 10 31
17 30 12 43
16 31 20 51
15 68 28 98
14 84 62 153
13 107 87 196
12 147 104 262
11 139 160 308
10 158 144 314
9 165 160 327
8 153 150 314
7 146 172 324
6 92 137 234
5 71 86 162
4 61 56 119
3 26 28 55
2 10 14 24
1 6 3 9
0 (@) 1 1 2
0 ($) 1 5 6
(@) These students attempted some of the problems
($) These students attempted none of the problems
(*) Total includes students who failed to mark their gender
2005 American Mathematics Contest 8
Number of Students by Grade
Achieving indicated Score
SCORE 5th Grade 6th Grade 7th Grade 8th Grade
25 0 0 0 0
24 0 0 1 2
23 0 0 1 1
22 0 0 1 3
21 1 1 1 13
20 0 1 3 6
19 0 1 5 11
18 0 0 6 25
17 0 3 10 30
16 0 0 7 43
15 0 3 21 74
14 1 5 28 118
13 1 14 31 148
12 1 11 65 181
11 1 10 76 218
10 1 28 93 185
9 0 23 100 198
8 3 25 91 187
7 2 27 107 178
6 5 26 78 119
5 2 23 49 84
4 2 10 41 65
3 1 9 15 26
2 2 3 8 10
1 1 1 2 5
0(@) 0 1 3 4
0($) 0 0 0 0
(@) These students attempted some of the problems
($) These students attempted none of the problems
Note: Some students failed to indicate a grade
Table of Item Difficulty for the 2005
American Mathematics Contest 8
Tabulation of responses by 3085 Students
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 1.07 66.87* 23.89 7.78 0.16 0.23 0.00
2 14.42 16.01 62.01* 3.40 3.34 0.78 0.03
3 5.93 8.56 33.10 43.21* 8.59 0.62 0.00
4 32.03 3.99 50.11* 10.02 2.88 0.94 0.03
5 6.55 63.76* 8.30 3.70 17.31 0.36 0.03
6 17.05 19.81 27.49* 19.16 14.78 1.65 0.06
7 26.00 20.68* 8.65 41.17 2.63 0.84 0.03
8 14.85 12.61 12.16 8.46 50.15* 1.52 0.26
9 12.80 21.78 19.74 37.18* 6.39 2.11 0.00
10 3.21 2.53 2.43 87.46* 3.31 1.04 0.03
11 7.94 7.97 61.36* 7.71 12.87 2.07 0.06
12 4.73 5.80 21.46 55.24* 11.28 1.43 0.06
13 19.87 45.32 19.71* 7.97 5.35 1.72 0.06
14 13.68 33.06* 6.13 21.88 22.07 3.08 0.10
15 20.62 23.79 27.39* 10.63 12.71 4.76 0.10
16 5.41 7.16 9.98 19.58* 54.88 2.95 0.03
17 12.90 2.72 30.31 6.03 45.58* 2.33 0.13
18 27.55 18.93 28.04* 15.82 5.90 3.73 0.03
19 37.63* 26.22 17.60 6.94 6.84 4.57 0.19
20 26.45* 23.63 21.94 14.88 5.90 7.10 0.10
21 26.74 35.66 22.30* 5.67 4.83 4.76 0.03
22 11.02 14.42 21.23 27.91 18.18* 6.97 0.26
23 10.99 21.43* 28.65 14.62 14.10 10.02 0.19
24 13.00 14.62* 24.28 18.06 19.74 10.21 0.10
25 21.82* 23.79 18.64 13.91 10.47 11.35 0.03
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked for the same problem