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2004 - AMC 12A & 12B Item Difficulty

2004 Contest Item Difficulty
for the AMC 12 A & B
CONTEST 12A Item Difficulty
ITEM
A
B
C
D
E
OMITS
?
1
0.71
1.31
41.41
3.21
52.12
*
1.23
0.01
2
1.65
2.48
89.23
*
0.92
5.22
0.49
0.01
3
3.89
37.09
*
20.78
4.75
5.62
27.85
0.01
4
1.05
0.56
4.31
2.93
84.29
*
6.83
0.03
5
11.79
61.70
*
0.59
9.06
2.35
14.51
0.01
6
44.09
*
3.87
23.78
1.33
7.44
19.47
0.02
7
11.31
32.93
*
15.34
16.51
7.63
16.26
0.02
8
11.83
48.15
*
2.43
4.15
1.70
31.73
0.01
9
3.09
14.37
40.76
*
4.59
5.76
31.43
0.01
10
1.36
3.36
65.01
*
5.38
0.68
24.19
0.01
11
21.63
*
5.92
5.85
4.63
2.85
59.09
0.01
12
3.6
33.07
*
7.60
1.69
2.92
51.11
0.00
13
8.06
30.52
*
4.56
3.37
6.49
46.99
0.01
14
9.37
*
1.88
8.22
11.24
2.46
66.81
0.01
15
9.62
13.24
15.77
*
7.08
6.61
47.66
0.02
16
11.09
3.55
*
1.36
1.15
6.95
75.89
0.01
17
5.85
5.21
22.12
14.52
*
1.29
50.99
0.01
18
5.00
3.44
5.73
11.41
*
3.68
70.73
0.01
19
2.77
4.95
2.63
2.69
*
3.90
83.05
0.01
20
9.52
6.81
11.12
5.13
6.81
*
60.6
0.01
21
1.00
1.88
2.13
3.03
*
1.44
90.52
0.00
22
1.43
2.70
*
1.30
1.41
4.85
88.30
0.01
23
2.56
2.34
2.04
2.10
3.01
*
87.94
0.01
24
1.86
1.47
1.53
*
1.26
1.48
92.40
0.00
25
1.27
1.51
2.32
1.61
0.82
*
92.47
0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete erasures or two answers marked in the same column
ITEM
A
B
C
D
E
OMITS
?
1
96.87
*
1.28
0.38
0.43
0.07
0.96
0.01
2
0.15
1.61
7.14
89.08
*
0.75
1.25
0.01
3
81.91
*
1.25
1.11
0.47
0.80
14.44
0.02
4
12.09
63.06
*
11.64
2.23
0.38
10.59
0.01
5
52.43
*
8.86
3.32
2.14
1.95
31.29
0.01
6
78.44
*
2.21
1.20
1.26
3.03
13.85
0.01
7
4.60
49.85
*
4.38
12.43
0.92
27.80
0.01
8
0.71
0.95
1.95
89.19
*
3.85
3.34
0.01
9
10.55
6.24
7.02
18.19
45.51
*
12.48
0.02
10
40.85
*
1.58
1.83
12.32
3.31
40.10
0.01
11
3.55
4.65
27.40
50.05
*
1.89
12.43
0.02
12
6.57
11.03
31.75
*
9.16
2.35
39.12
0.02
13
9.53
*
2.30
12.36
5.91
5.84
64.02
0.03
14
2.42
3.79
3.84
18.48
*
2.72
68.74
0.01
15
2.80
62.47
*
2.45
2.59
1.54
28.14
0.01
16
5.71
4.02
7.34
*
1.89
0.38
80.66
0.01
17
3.65
*
2.34
2.67
2.40
1.36
87.57
0
18
3.19
2.26
2.27
1.66
8.26
*
82.34
0.01
19
3.61
*
1.95
2.70
3.49
1.76
86.48
0.01
20
10.97
8.58
*
6.98
2.39
5.12
65.94
0.02
21
1.09
0.96
1.95
*
 1.41
0.92
93.67
0
22
4.19
3.51
2.80
*
 3.56
2.60
83.32
0.01
23
0.92
1.57
2.08
*
 1.31
0.98
93.13
0.01
24
1.03
1.33
*
3.00
1.65
1.03
91.96
0
25
2.91
2.65
*
3.83
2.50
7.81
80.30
0.01
(*) Correct Response
(?) Response the computer was unable to read due to incomplete erasures or two answers marked in the same column
2004 Directory for High School
Answers
AMC 10A
posted on 2/16/04
AMC 10B
posted on 1/1/04
AMC 12A
posted on 2/16/04
AMC 12B
posted on 1/1/04
Statistics
12A & 12B
Item Difficulty
in General
by Gender
by Grade
Score Distribution
in General
by Gender
by Grade
Perfect Scores
Team Scores

The AMC Web Site was last updated on 3/18/2004