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2006 - AMC 12A & 12B Item Difficulty

2006 Contest Item Difficulty
for the AMC 12 A & B
CONTEST 12A Item Difficulty
ITEM
A
B
C
D
E
OMITS
?
1
99.35
*
0.10
0.23
0.20
0.03
0.09
0.00
2
13.59
1.50
51.57
*
0.76
7.53
25.03
0.01
3
0.44
88.66
*
0.32
0.29
9.61
0.66
0.01
4
18.72
1.74
0.51
0.86
74.53
*
3.62
0.02
5
1.47
6.97
8.74
78.48
*
1.37
2.95
0.03
6
75.12
*
0.99
3.28
2.19
2.61
15.80
0.01
7
6.85
53.53
*
7.53
5.98
3.83
22.28
0.01
8
9.25
12.06
67.23
*
2.53
1.26
7.65
0.02
9
82.06
*
1.79
0.78
0.44
2.76
12.16
0.02
10
2.47
1.50
6.69
35.34
20.04
*
33.93
0.02
11
15.28
9.83
27.26
*
9.15
6.18
32.28
0.01
12
14.20
54.07
*
1.74
6.87
3.26
19.84
0.02
13
4.24
1.17
2.10
1.02
59.30
*
32.14
0.03
14
0.64
5.16
50.61
*
24.00
4.14
15.43
0.02
15
35.67
*
15.04
3.09
5.51
14.12
26.55
0.02
16
3.25
40.88
*
1.59
2.06
5.47
46.75
0.01
17
3.08
6.25
*
4.79
3.47
0.98
81.42
0.01
18
13.15
1.04
3.13
6.52
4.64
*
71.52
0.01
19
1.26
1.50
1.99
1.67
3.05
*
90.52
0.01
20
17.25
5.80
5.57
*
2.68
1.69
66.99
0.01
21
0.92
1.21
3.77
1.43
2.78
*
89.88
0.01
22
1.44
1.42
1.58
1.61
*
0.79
93.16
0.01
23
1.01
1.52
*
1.65
1.06
1.81
92.94
0.01
24
10.26
1.78
2.05
2.72
*
1.38
81.79
0.01
25
1.24
1.85
2.01
1.56
1.42
*
91.90
0.01
(*) 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
3.61
3.11
79.75
*
8.46
2.97
2.09
0.02
2
77.14
*
3.98
0.62
0.90
2.71
14.65
0.01
3
85.29
*
1.93
0.25
8.40
2.57
1.55
0.02
4
91.62
*
2.88
1.01
2.16
0.48
1.84
0.01
5
71.80
*
7.54
2.91
2.11
1.67
13.97
0.00
6
0.70
87.24
*
1.02
0.77
5.60
4.66
0.01
7
4.52
83.47
*
3.68
3.57
1.14
3.60
0.02
8
1.55
2.49
2.15
3.73
70.45
*
19.59
0.04
9
4.36
45.94
*
3.42
7.94
4.22
34.11
0.02
10
35.87
*
5.19
11.28
1.36
24.55
21.72
0.02
11
6.85
1.39
12.15
8.28
46.55
*
24.77
0.01
12
6.10
5.09
4.15
12.38
*
5.66
66.61
0.01
13
5.86
4.89
28.01
*
2.21
4.06
54.96
0.01
14
2.07
4.71
18.92
21.26
*
1.12
51.91
0.01
15
2.12
23.04
*
8.03
3.41
1.95
61.43
0.02
16
2.12
2.08
12.67
*
2.32
1.94
78.87
0.01
17
6.00
2.19
15.14
*
13.37
3.87
59.43
0.00
18
4.63
8.13
*
11.11
3.14
10.90
71.09
0.01
19
1.36
21.98
*
1.52
13.56
2.91
58.65
0.01
20
1.69
2.68
2.81
*
1.49
5.57
85.75
0.01
21
2.20
1.37
2.31
*
1.14
1.26
91.72
0.01
22
1.40
3.30
*
2.80
1.42
0.74
90.33
0.01
23
1.83
2.15
3.76
2.36
1.58
*
88.31
0.01
24
1.67
1.47
1.71
*
1.87
0.96
92.33
0.00
25
1.04
2.19
*
2.05
2.78
0.96
90.97
0.01
(*) Correct Response
(?) Response the computer was unable to read due to incomplete erasures or two answers marked in the same column

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