American Mathematics Competitions
2005 AMC 10 A Results for Mississippi
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 252
Number of unofficial participants: 0
Average score of participants: 69.1
Average score for female students is: 66.1 ( 116 Students)
Average score for male students is: 71.8 ( 115 Students)
Average score for unspecified gender is 70.6 ( 21 Students)
Average score for grade 10 is: 70.1 ( 144 Students)
Average score for grade 9 is: 67.2 ( 95 Students)
Average score with unknown grade: 71.1 ( 13 Students)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 1
Number of schools returning results 10
Average school winning score 91.70
American Mathematics Competitions
2005 AMC 12 A Results for Mississippi
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 422
Number of unofficial participants: 0
Average score of participants: 67.1
Average score for female students is: 63.0 ( 210 Students)
Average score for male students is: 71.9 ( 191 Students)
Average score for unspecified gender is 64.0 ( 21 Students)
Average score for grade 12 is: 68.6 ( 171 Students)
Average score for grade 11 is: 64.9 ( 229 Students)
Average score for grade 10 is: 83.7 ( 9 Students)
Average score for grade 8 and below is: 105.0 ( 2 Students)
Average score with unknown grade: 67.8 ( 11 Students)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 14
Number of schools returning results 13
Average school winning score 96.15
Average school team score 274.31
American Mathematics Competitions
2005 AMC 10 B Results for Mississippi
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 115
Number of unofficial participants: 0
Average score of participants: 72.2
Average score for female students is: 68.9 ( 48 Students)
Average score for male students is: 74.7 ( 63 Students)
Average score for unspecified gender is 71.5 ( 4 Students)
Average score for grade 10 is: 71.0 ( 93 Students)
Average score for grade 9 is: 77.3 ( 21 Students)
Average score with unknown grade: 70.5 ( 1 Student)
AIME qualifying score = 120.0 or better
Number of AIME qualifers 1
Number of schools returning results 4
Average school winning score 97.50
American Mathematics Competitions
2005 AMC 12 B Results for Mississippi
GRAND STATISTICS
TOTAL NUMBER of official students taking exam: 140
Number of unofficial participants: 0
Average score of participants: 73.6
Average score for female students is: 69.6 ( 59 Students)
Average score for male students is: 77.1 ( 77 Students)
Average score for unspecified gender is 66.1 ( 4 Students)
Average score for grade 12 is: 71.9 ( 65 Students)
Average score for grade 11 is: 71.6 ( 55 Students)
Average score for grade 10 is: 82.3 ( 17 Students)
Average score for grade 8 and below is: 102.5 ( 2 Students)
Average score with unknown grade: 91.0 ( 1 Student)
AIME qualifying score = 100.0 or better
Number of AIME qualifers 6
Number of schools returning results 6
Average school winning score 96.25
Average school team score 276.75
2005 State AMC 12 TEAM Score Distribution
-----------------------------------------------
score A B Rank
-----------------------------------------------
362.5 1 1
354.0 1 2
329.5 1 3
311.5 1 4
308.0 1 5
303.0 1 6
279.5 1 7
270.5 1 8
270.0 1 9
262.5 1 10
259.0 1 11
254.0 1 12
248.0 1 13
247.0 1 14
246.0 1 15
243.5 1 16
237.5 1 17
224.5 1 18
216.0 1 19
2005 AMC Contest Score Distributions
-----------------------------------------------
score 12 A 12 B 10 A 10 B
-----------------------------------------------
129.0 1
127.5 1
122.0 1
120.5 1
118.5 1
115.0 1 1
113.5 1
112.5 1
111.5 1
109.0 1 1
108.0 2
106.5 1
105.5 2
104.5 1 1 1
103.0 1 1
102.0 1 1
101.0 1 1
100.5 2
98.5 2 1
98.0 1
97.5 1
97.0 1 1 4
96.0 1 1
95.0 4 2 1
94.0 2 2
93.5 1 1 1
93.0 1
92.5 5 2 1
92.0 2
91.5 5 1 1
91.0 2 1
90.5 1 3
90.0 2 2 1 2
89.5 1
89.0 5 4 1 1
88.5 3
88.0 4 2 2 1
87.5 2
87.0 4 2
86.5 5 1
86.0 1 1 2
85.5 4 3 6
85.0 2 1 1 1
84.5 3 3 1
84.0 5 1 5 1
83.5 2 2
83.0 5 4 9 2
82.5 1 1
82.0 5 4 7
81.5 2 1 1
81.0 11 2 3 1
80.5 4 2 1 2
80.0 4 2
79.5 5 1 2 3
79.0 1
78.5 7 2 6 1
78.0 6 1 2 5
77.5 3 2 1
77.0 2 3 5 2
76.5 4 1 2
76.0 4 2 3 4
75.5 1 3 1
75.0 4 5 3
74.5 5 4 1
74.0 3 3 4 3
73.5 7 3 5 3
73.0 1 2 3 1
72.5 1 3 1
72.0 5 4 3 3
71.5 6 3 6 1
71.0 4 2 4 3
70.5 10 2 4 3
70.0 3 5 4 3
69.5 1 3 5
69.0 9 3 5
68.5 4 1 3 2
68.0 6 1 7
67.5 4 1 7 1
67.0 6 1 3 1
66.5 3 1 2
66.0 1 3
65.5 6 1 5 1
65.0 10 1 6 2
64.5 7 6
64.0 4 1 3
63.5 1 2 1 2
63.0 5 5
62.5 7 1 4 1
62.0 2 1 2
61.5 2 1 2
61.0 9 1 3
60.5 5 4 1
60.0 5 2 3 2
59.5 3 2 4 2
59.0 9 2 2
58.5 6 1 1 1
58.0 3 2 3
57.5 1
57.0 4 1
56.5 3 2
56.0 5 1 1 1
55.5 5 3 2 1
55.0 3 2 2
54.5 6 1
54.0 1 2 4 2
53.5 5 1
53.0 2 2 1
52.5 4 2
52.0 3 3
51.5 1 1
50.5 3 1 3 2
50.0 2 2
49.5 2 1 1
49.0 6 1
48.5 1 1
48.0 4 3 4
47.5 2 1
47.0 3
46.5 1 1 2 1
46.0 3
45.5 1 2
45.0 1
44.5 4 1
44.0 1 1 1
43.5 1
43.0 1 1
42.5 2 1
42.0 5 1 1
41.5 1 1
41.0 2
40.5 3
39.5 1
39.0 1
38.5 1
38.0 1
37.5 1 2
37.0 1
36.5 3 2
36.0 7
35.5 1
34.0 1
31.5 1
31.0 1
30.0 5 1
28.0 1
26.5 1 1
25.5 1
24.5 1
24.0 6 1
23.0 1
18.0 1
American Mathematics Competitions
2005 AMC 10 A Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5
149.0 124.0 99.0
148.5 123.5 98.5 1
148.0 123.0 98.0
147.5 122.5 97.5
147.0 122.0 97.0
146.5 121.5 96.5
146.0 121.0 96.0 1
145.5 120.5 1 95.5
145.0 120.0 95.0
144.5 119.5 94.5
144.0 119.0 94.0 2
143.5 118.5 93.5 1
143.0 118.0 93.0
142.5 117.5 92.5 1
142.0 117.0 92.0 2
141.5 116.5 91.5 1
141.0 116.0 91.0 1
140.5 115.5 90.5
140.0 115.0 90.0 1
139.5 114.5 89.5
139.0 114.0 89.0 1
138.5 113.5 88.5
138.0 113.0 88.0 2
137.5 112.5 87.5
137.0 112.0 87.0 1 1
136.5 111.5 86.5
136.0 111.0 86.0
135.5 110.5 85.5 5 1
135.0 110.0 85.0
134.5 109.5 84.5 2 1
134.0 109.0 84.0 4 1
133.5 108.5 83.5
133.0 108.0 83.0 4 4
132.5 107.5 82.5
132.0 107.0 82.0 3 4
131.5 106.5 1 81.5 1
131.0 106.0 81.0 1 2
130.5 105.5 80.5
130.0 105.0 80.0 2
129.5 104.5 1 79.5
129.0 104.0 79.0 1
128.5 103.5 78.5 5
128.0 103.0 1 78.0 1 1
127.5 102.5 77.5
127.0 102.0 1 77.0 3 2
126.5 101.5 76.5 1
126.0 101.0 1 76.0 1 2
125.5 100.5 75.5
American Mathematics Competitions
2005 AMC 10 A Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 2 50.0 2 25.0
74.5 2 2 49.5 1 24.5 1
74.0 2 2 49.0 1 24.0
73.5 3 1 48.5 23.5
73.0 3 48.0 1 3 23.0
72.5 2 1 47.5 2 22.5
72.0 1 2 47.0 22.0
71.5 4 2 46.5 1 1 21.5
71.0 2 1 46.0 21.0
70.5 1 3 45.5 1 1 20.5
70.0 2 1 45.0 20.0
69.5 1 1 44.5 1 19.5
69.0 1 4 44.0 19.0
68.5 1 1 43.5 18.5
68.0 2 5 43.0 18.0 1
67.5 1 5 42.5 1 17.5
67.0 2 1 42.0 1 17.0
66.5 1 41.5 1 16.5
66.0 41.0 16.0
65.5 1 4 40.5 15.5
65.0 5 40.0 15.0
64.5 1 4 39.5 1 14.5
64.0 1 39.0 14.0
63.5 1 38.5 13.5
63.0 5 38.0 13.0
62.5 1 1 37.5 2 12.5
62.0 1 1 37.0 1 12.0
61.5 36.5 2 11.5
61.0 1 36.0 11.0
60.5 1 3 35.5 10.5
60.0 3 35.0 10.0
59.5 3 1 34.5 9.5
59.0 1 1 34.0 1 9.0
58.5 1 33.5 8.5
58.0 3 33.0 8.0
57.5 32.5 7.5
57.0 32.0 7.0
56.5 1 1 31.5 6.5
56.0 1 31.0 6.0
55.5 2 30.5 5.5
55.0 1 1 30.0 5.0
54.5 29.5 4.5
54.0 2 1 29.0 4.0
53.5 1 28.5 3.5
53.0 2 28.0 3.0
52.5 1 1 27.5 2.5
52.0 1 2 27.0 2.0
51.5 1 26.5 1.5
51.0 26.0 1.0
50.5 2 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 A Results for Mississippi
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
120.5 1
106.5 1
104.5 1
103.0 1
102.0 1
101.0 1
98.5 1
96.0 1
94.0 2
93.5 1
92.5 1
92.0 2
91.5 1
91.0 1
90.0 1
89.0 1
88.0 1 1
87.0 1 1
85.5 3 3
85.0 1
84.5 1 2
84.0 2 3
83.0 3 5 1
82.0 2 4 1
81.5 1
81.0 2 1
80.5 1
80.0 2
79.5 1 1
79.0 1
78.5 2 3 1
78.0 1 1
77.0 5
76.5 1
76.0 2 1
75.5 1
75.0 1 2
74.5 2 2
74.0 2 2
73.5 2 2 1
73.0 1 2
72.5 1 2
72.0 1 2
71.5 4 2
71.0 3 1
70.5 2 2
70.0 3 1
69.5 1 2
69.0 3 2
68.5 2 1
68.0 4 3
67.5 3 4
67.0 1 2
66.5 2
65.5 3 2
65.0 2 3 1
64.5 3 2 1
64.0 1
63.5 1
63.0 2 3
62.5 3 1
62.0 2
61.0 1
60.5 2 2
60.0 3
59.5 3 1
59.0 2
58.5 1
58.0 3
56.5 1 1
56.0 1
55.5 1 1
55.0 1 1
54.0 1 3
53.5 1
53.0 1 1
52.5 2
52.0 3
51.5 1
50.5 2 1
50.0 2
49.5 1
49.0 1
48.0 1 3
47.5 1 1
46.5 2
45.5 2
44.5 1
42.5 1
42.0 1
41.5 1
39.5 1
37.5 1 1
37.0 1
36.5 1 1
34.0 1
24.5 1
18.0 1
American Mathematics Competitions
2005 AMC 10 A Results for Mississippi
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.20 0.12 0.40 8.13* 0.75 0.40 0.00
2 0.20 0.12 5.08* 0.00 1.59 3.02 0.00
3 0.04 9.01* 0.12 0.32 0.16 0.36 0.00
4 0.48 0.52* 1.98 0.60 0.36 6.07 0.00
5 4.37* 0.44 4.72 0.12 0.16 0.20 0.00
6 0.36 3.81* 3.97 0.12 0.08 1.67 0.00
7 0.75 2.58* 0.63 0.36 0.75 4.92 0.00
8 1.15 0.44 2.74* 0.00 0.12 5.56 0.00
9 0.75 5.28* 1.31 0.12 0.36 2.18 0.00
10 0.99* 0.44 0.63 0.44 0.16 7.34 0.00
11 0.44 1.55* 0.16 0.71 0.04 7.10 0.00
12 0.28 0.52* 0.36 0.40 0.32 8.13 0.00
13 1.39 0.56 0.48 0.32 0.71* 6.55 0.00
14 0.60 0.52 0.24 0.52 1.67* 6.47 0.00
15 0.28 0.63 0.79 0.83 0.79* 6.67 0.00
16 0.52 0.40 0.67 1.87* 0.08 6.47 0.00
17 0.32 0.36 0.44 1.59* 0.56 6.75 0.00
18 1.55* 1.71 0.95 2.90 0.28 2.58 0.04
19 0.40 0.71 0.83 2.54* 0.63 4.88 0.00
20 0.40* 0.28 0.60 0.60 0.24 7.90 0.00
21 1.59 0.60* 0.32 0.24 0.48 6.79 0.00
22 0.56 0.16 0.20 1.94* 0.48 6.67 0.00
23 0.08 0.36 1.51* 1.03 0.67 6.35 0.00
24 0.91 0.71* 0.20 0.20 0.04 7.94 0.00
25 0.56 0.48 1.19 0.48* 0.12 7.18 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
2005 AMC 12 A Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5
149.0 124.0 99.0
148.5 123.5 98.5 2
148.0 123.0 98.0 1
147.5 122.5 97.5 1
147.0 122.0 97.0 1
146.5 121.5 96.5
146.0 121.0 96.0
145.5 120.5 95.5
145.0 120.0 95.0 4
144.5 119.5 94.5
144.0 119.0 94.0 1 1
143.5 118.5 93.5
143.0 118.0 93.0
142.5 117.5 92.5 4 1
142.0 117.0 92.0
141.5 116.5 91.5 2 2
141.0 116.0 91.0
140.5 115.5 90.5 1
140.0 115.0 1 90.0 2
139.5 114.5 89.5
139.0 114.0 89.0 2 3
138.5 113.5 1 88.5
138.0 113.0 88.0 2 2
137.5 112.5 1 87.5 2
137.0 112.0 87.0 2 2
136.5 111.5 1 86.5 5
136.0 111.0 86.0 1
135.5 110.5 85.5 3 1
135.0 110.0 85.0 1 1
134.5 109.5 84.5 2 1
134.0 109.0 1 84.0 4 1
133.5 108.5 83.5 1 1
133.0 108.0 1 1 83.0 4 1
132.5 107.5 82.5 1
132.0 107.0 82.0 2 3
131.5 106.5 81.5 2
131.0 106.0 81.0 6 4
130.5 105.5 80.5 1 2
130.0 105.0 80.0 2 2
129.5 104.5 1 79.5 2 3
129.0 104.0 79.0
128.5 103.5 78.5 3 3
128.0 103.0 1 78.0 3 2
127.5 1 102.5 77.5 3
127.0 102.0 1 77.0 1 1
126.5 101.5 76.5 3 1
126.0 101.0 1 76.0 3 1
125.5 100.5 1 75.5 1
American Mathematics Competitions
2005 AMC 12 A Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 3 50.0 25.0
74.5 3 2 49.5 2 24.5
74.0 3 49.0 2 4 24.0 6
73.5 2 4 48.5 1 23.5
73.0 1 48.0 1 3 23.0
72.5 1 47.5 22.5
72.0 4 1 47.0 1 1 22.0
71.5 3 2 46.5 1 21.5
71.0 2 2 46.0 1 21.0
70.5 5 5 45.5 1 20.5
70.0 3 45.0 1 20.0
69.5 44.5 2 1 19.5
69.0 4 4 44.0 1 19.0
68.5 3 1 43.5 1 18.5
68.0 1 5 43.0 1 18.0
67.5 1 2 42.5 2 17.5
67.0 2 4 42.0 2 3 17.0
66.5 2 1 41.5 1 16.5
66.0 1 41.0 1 1 16.0
65.5 2 4 40.5 1 2 15.5
65.0 5 5 40.0 15.0
64.5 2 5 39.5 14.5
64.0 4 39.0 1 14.0
63.5 1 38.5 1 13.5
63.0 2 3 38.0 1 13.0
62.5 6 1 37.5 12.5
62.0 2 37.0 12.0
61.5 2 36.5 2 1 11.5
61.0 5 4 36.0 4 3 11.0
60.5 1 3 35.5 10.5
60.0 2 2 35.0 10.0
59.5 3 34.5 9.5
59.0 3 5 34.0 9.0
58.5 1 5 33.5 8.5
58.0 1 1 33.0 8.0
57.5 32.5 7.5
57.0 4 32.0 7.0
56.5 1 2 31.5 1 6.5
56.0 3 2 31.0 1 6.0
55.5 1 4 30.5 5.5
55.0 3 30.0 3 2 5.0
54.5 2 3 29.5 4.5
54.0 1 29.0 4.0
53.5 5 28.5 3.5
53.0 1 28.0 1 3.0
52.5 1 3 27.5 2.5
52.0 1 2 27.0 2.0
51.5 1 26.5 1 1.5
51.0 26.0 1.0
50.5 2 1 25.5 1 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 A Results for Mississippi
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
127.5 1
115.0 1
113.5 1
112.5 1
111.5 1
109.0 1
108.0 2
104.5 1
103.0 1
102.0 1
101.0 1
100.5 2
98.5 1 1
98.0 1
97.5 1
97.0 1
95.0 1 3
94.0 1 1
92.5 1 4
91.5 2 3
90.5 1
90.0 1 1
89.0 3 2
88.0 1 2 1
87.5 1 1
87.0 4
86.5 1 4
86.0 1
85.5 3 1
85.0 1 1
84.5 1 2
84.0 1 4
83.5 1 1
83.0 3 2
82.5 1
82.0 3 2
81.5 1 1
81.0 5 6
80.5 3 1
80.0 3 1
79.5 4 1
78.5 4 3
78.0 2 3 1
77.5 1 2
77.0 1 1
76.5 2 2
76.0 2 2
75.5 1
75.0 2 2
74.5 1 1 3
74.0 3
73.5 4 2 1
73.0 1
72.5 1
72.0 1 4
71.5 4 1 1
71.0 1 3
70.5 4 6
70.0 1 1 1
69.0 4 5
68.5 2 2
68.0 3 3
67.5 1 3
67.0 4 2
66.5 2 1
66.0 1
65.5 4 2
65.0 7 2 1
64.5 5 2
64.0 2 2
63.5 1
63.0 3 2
62.5 5 2
62.0 2
61.5 1 1
61.0 7 2
60.5 2 2 1
60.0 3 1 1
59.5 1 2
59.0 5 4
58.5 4 2
58.0 2 1
57.0 1 3
56.5 3
56.0 3 2
55.5 5
55.0 1 2
54.5 4 2
54.0 1
53.5 3 2
53.0 1 1
52.5 3 1
52.0 2 1
51.5 1
50.5 2 1
49.5 1 1
49.0 3 3
48.5 1
48.0 1 3
47.0 2 1
46.5 1
46.0 1 2
45.5 1
45.0 1
44.5 3 1
44.0 1
43.5 1
43.0 1
42.5 2
42.0 3 2
41.5 1
41.0 2
40.5 2 1
39.0 1
38.5 1
38.0 1
36.5 3
36.0 3 4
31.5 1
31.0 1
30.0 4 1
28.0 1
26.5 1
25.5 1
24.0 3 3
23.0 1
American Mathematics Competitions
2005 AMC 12 A Results for Mississippi
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 0.12 0.14 0.19 8.67* 0.26 0.62 0.00
2 0.07 8.86* 0.40 0.40 0.02 0.24 0.00
3 0.50 1.75* 1.87 0.76 0.52 4.60 0.00
4 5.47* 0.52 3.65 0.21 0.02 0.12 0.00
5 0.31 4.50* 3.58 0.14 0.09 1.35 0.02
6 0.71 3.51* 0.43 0.55 1.04 3.77 0.00
7 1.02 0.47 4.38* 0.28 0.19 3.65 0.00
8 0.64 0.55 0.38 1.56* 0.38 6.49 0.00
9 2.18* 0.47 1.00 0.40 0.12 5.83 0.00
10 0.59 1.99* 0.28 1.07 0.09 5.97 0.00
11 0.71 0.71 0.52 0.55 2.11* 5.40 0.00
12 1.11 0.50 0.45 2.09* 1.52 4.34 0.00
13 0.40 0.36 0.50 2.16* 0.76 5.83 0.00
14 0.64 0.57 3.25 0.73* 0.57 4.22 0.02
15 0.17 0.62 1.00* 0.81 0.92 6.47 0.02
16 0.43 0.50 0.76 0.57* 0.50 7.25 0.00
17 0.83* 1.26 0.73 0.52 0.57 6.09 0.00
18 0.43* 0.47 0.71 0.50 0.36 7.54 0.00
19 1.00 1.45* 1.02 0.85 1.28 4.41 0.00
20 0.40 0.45 0.31 0.19 0.36* 8.29 0.00
21 0.33 0.40 0.36* 0.45 0.14 8.32 0.00
22 0.50 0.57* 0.43 0.26 0.40 7.84 0.00
23 1.00 0.28* 0.36 0.40 0.26 7.70 0.00
24 0.28 0.36* 0.38 0.36 0.17 8.46 0.00
25 0.59 0.57 0.33* 0.33 0.24 7.94 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
2005 AMC 10 B Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5
149.0 124.0 99.0
148.5 123.5 98.5
148.0 123.0 98.0
147.5 122.5 97.5
147.0 122.0 1 97.0 3 1
146.5 121.5 96.5
146.0 121.0 96.0
145.5 120.5 95.5
145.0 120.0 95.0 1
144.5 119.5 94.5
144.0 119.0 94.0
143.5 118.5 93.5
143.0 118.0 93.0 1
142.5 117.5 92.5
142.0 117.0 92.0
141.5 116.5 91.5
141.0 116.0 91.0
140.5 115.5 90.5
140.0 115.0 90.0 1 1
139.5 114.5 89.5 1
139.0 114.0 89.0 1
138.5 113.5 88.5 2 1
138.0 113.0 88.0 1
137.5 112.5 87.5
137.0 112.0 87.0
136.5 111.5 86.5
136.0 111.0 86.0 2
135.5 110.5 85.5
135.0 110.0 85.0 1
134.5 109.5 84.5 1
134.0 109.0 1 84.0 1
133.5 108.5 83.5
133.0 108.0 83.0 1 1
132.5 107.5 82.5 1
132.0 107.0 82.0
131.5 106.5 81.5
131.0 106.0 81.0 1
130.5 105.5 80.5 1 1
130.0 105.0 80.0
129.5 104.5 79.5 2 1
129.0 104.0 79.0
128.5 103.5 78.5 1
128.0 103.0 78.0 2 3
127.5 102.5 77.5 1
127.0 102.0 77.0 1 1
126.5 101.5 76.5 2
126.0 101.0 76.0 2 2
125.5 100.5 75.5
American Mathematics Competitions
2005 AMC 10 B Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 50.0 2 25.0
74.5 1 49.5 24.5
74.0 1 2 49.0 24.0
73.5 2 1 48.5 1 23.5
73.0 1 48.0 23.0
72.5 1 47.5 1 22.5
72.0 3 47.0 22.0
71.5 1 46.5 1 21.5
71.0 1 2 46.0 21.0
70.5 2 45.5 20.5
70.0 1 2 45.0 20.0
69.5 5 44.5 19.5
69.0 44.0 1 19.0
68.5 2 43.5 18.5
68.0 43.0 1 18.0
67.5 1 42.5 17.5
67.0 1 42.0 17.0
66.5 41.5 16.5
66.0 2 1 41.0 16.0
65.5 1 40.5 15.5
65.0 2 40.0 15.0
64.5 39.5 14.5
64.0 3 39.0 14.0
63.5 2 38.5 13.5
63.0 38.0 13.0
62.5 1 37.5 12.5
62.0 37.0 12.0
61.5 1 1 36.5 11.5
61.0 1 36.0 11.0
60.5 1 35.5 10.5
60.0 1 1 35.0 10.0
59.5 2 34.5 9.5
59.0 34.0 9.0
58.5 1 33.5 8.5
58.0 33.0 8.0
57.5 32.5 7.5
57.0 32.0 7.0
56.5 31.5 6.5
56.0 1 31.0 6.0
55.5 1 30.5 5.5
55.0 30.0 1 5.0
54.5 29.5 4.5
54.0 1 1 29.0 4.0
53.5 28.5 3.5
53.0 1 28.0 3.0
52.5 27.5 2.5
52.0 27.0 2.0
51.5 26.5 1.5
51.0 26.0 1.0
50.5 2 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 10 B Results for Mississippi
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 unknown
---------------------------
122.0 1
109.0 1
97.0 1 3
95.0 1
93.5 1
93.0 1
90.0 2
89.5 1
89.0 1
88.5 3
88.0 1
86.0 1 1
85.0 1
84.5 1
84.0 1
83.0 2
82.5 1
81.0 1
80.5 2
79.5 2 1
78.5 1
78.0 1 4
77.5 1
77.0 1 1
76.5 2
76.0 1 3
74.5 1
74.0 1 2
73.5 1 2
73.0 1
72.5 1
72.0 3
71.5 1
71.0 3
70.5 2 1
70.0 1 2
69.5 5
68.5 2
67.5 1
67.0 1
66.0 3
65.5 1
65.0 2
64.0 1 2
63.5 2
62.5 1
61.5 2
61.0 3
60.5 1
60.0 2
59.5 2
58.5 1
56.0 1
55.5 1
54.0 1 1
53.0 1
50.5 2
50.0 2
48.5 1
47.5 1
46.5 1
44.0 1
43.0 1
30.0 1
American Mathematics Competitions
2005 AMC 10 B Results for Mississippi
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 8.00* 0.52 0.52 0.00 0.96 0.00 0.00
2 0.09 0.09 0.09 8.61* 0.26 0.87 0.00
3 0.00 0.52 3.74 4.52* 1.04 0.17 0.00
4 1.22 0.00 1.39 3.39* 0.17 3.83 0.00
5 0.35 0.17 8.17* 0.17 0.78 0.35 0.00
6 0.26 8.35* 0.09 0.26 0.17 0.87 0.00
7 0.52 0.35* 0.35 1.22 0.52 7.04 0.00
8 3.83* 0.17 0.96 0.09 0.09 4.87 0.00
9 0.78 0.43 3.30 3.22* 0.70 1.57 0.00
10 0.78* 1.30 0.43 0.26 0.35 6.87 0.00
11 0.17 0.43 0.52 1.30 0.78* 6.78 0.00
12 0.61 1.39 0.52 0.26 0.09* 7.13 0.00
13 0.17 0.43 2.00* 2.09 0.26 5.04 0.00
14 0.35 0.09 0.70* 2.26 0.52 6.09 0.00
15 1.48 0.61 0.43 4.09* 0.96 2.43 0.00
16 0.35 0.35 0.35 0.17* 0.17 8.61 0.00
17 0.43 1.57* 1.13 0.43 0.09 6.35 0.00
18 0.09 5.48 0.87 1.65* 0.78 1.13 0.00
19 0.52 4.70* 0.78 0.35 0.43 3.22 0.00
20 0.61 0.61 0.52* 0.17 0.00 8.09 0.00
21 0.09* 0.09 0.09 0.17 0.00 9.57 0.00
22 0.70 0.70 0.00* 0.09 0.17 8.26 0.09
23 3.57 0.26 0.35* 0.09 0.00 5.74 0.00
24 0.26 0.26 0.17 0.35 1.48* 7.48 0.00
25 0.26 0.09 3.65* 0.09 0.09 5.83 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
2005 AMC 12 B Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
150.0 125.0 100.0
149.5 124.5 99.5
149.0 124.0 99.0
148.5 123.5 98.5
148.0 123.0 98.0
147.5 122.5 97.5
147.0 122.0 97.0 1
146.5 121.5 96.5
146.0 121.0 96.0 1
145.5 120.5 95.5
145.0 120.0 95.0 2
144.5 119.5 94.5
144.0 119.0 94.0
143.5 118.5 1 93.5 1
143.0 118.0 93.0
142.5 117.5 92.5 2
142.0 117.0 92.0
141.5 116.5 91.5 1
141.0 116.0 91.0 2
140.5 115.5 90.5 2 1
140.0 115.0 1 90.0 2
139.5 114.5 89.5
139.0 114.0 89.0 4
138.5 113.5 88.5
138.0 113.0 88.0 1 1
137.5 112.5 87.5
137.0 112.0 87.0
136.5 111.5 86.5 1
136.0 111.0 86.0 1
135.5 110.5 85.5 1 2
135.0 110.0 85.0 1
134.5 109.5 84.5
134.0 109.0 84.0 1
133.5 108.5 83.5 1 1
133.0 108.0 83.0 4
132.5 107.5 82.5
132.0 107.0 82.0 1 3
131.5 106.5 81.5 1
131.0 106.0 81.0 1 1
130.5 105.5 2 80.5 1 1
130.0 105.0 80.0
129.5 104.5 1 79.5 1
129.0 1 104.0 79.0
128.5 103.5 78.5 2
128.0 103.0 78.0 1
127.5 102.5 77.5 1 1
127.0 102.0 77.0 2 1
126.5 101.5 76.5
126.0 101.0 76.0 1 1
125.5 100.5 75.5 2
American Mathematics Competitions
2005 AMC 12 B Results for Mississippi
SCORE DISTRIBUTION
GENDER
Score # Students Score # Students Score # Students
male female male female male female
75.0 1 4 50.0 25.0
74.5 49.5 1 24.5
74.0 2 1 49.0 24.0 1
73.5 2 1 48.5 23.5
73.0 2 48.0 2 1 23.0
72.5 47.5 22.5
72.0 3 1 47.0 22.0
71.5 1 2 46.5 1 21.5
71.0 2 46.0 21.0
70.5 1 1 45.5 20.5
70.0 2 3 45.0 20.0
69.5 1 44.5 19.5
69.0 1 2 44.0 1 19.0
68.5 1 43.5 18.5
68.0 43.0 18.0
67.5 1 42.5 17.5
67.0 1 42.0 1 17.0
66.5 1 41.5 16.5
66.0 41.0 16.0
65.5 1 40.5 15.5
65.0 1 40.0 15.0
64.5 39.5 14.5
64.0 39.0 14.0
63.5 1 1 38.5 13.5
63.0 38.0 13.0
62.5 1 37.5 1 12.5
62.0 37.0 12.0
61.5 1 36.5 11.5
61.0 36.0 11.0
60.5 35.5 1 10.5
60.0 2 35.0 10.0
59.5 2 34.5 9.5
59.0 1 34.0 9.0
58.5 1 33.5 8.5
58.0 2 33.0 8.0
57.5 1 32.5 7.5
57.0 1 32.0 7.0
56.5 31.5 6.5
56.0 1 31.0 6.0
55.5 1 2 30.5 5.5
55.0 1 1 30.0 5.0
54.5 1 29.5 4.5
54.0 1 1 29.0 4.0
53.5 28.5 3.5
53.0 28.0 3.0
52.5 27.5 2.5
52.0 27.0 2.0
51.5 26.5 1 1.5
51.0 26.0 1.0
50.5 1 25.5 .5
0.0 0 0
American Mathematics Competitions
2005 AMC 12 B Results for Mississippi
SCORE DISTRIBUTION
score -----------grade-----------
6 7 8 9 10 11 12 13 unknown
---------------------------
129.0 1
118.5 1
115.0 1
105.5 1 1
104.5 1
97.0 1
96.0 1
95.0 2
93.5 1
92.5 1 1
91.5 1
91.0 1 1
90.5 1 1 1
90.0 1 1
89.0 1 1 2
88.0 2
86.5 1
86.0 1
85.5 2 1
85.0 1
84.0 1
83.5 1 1
83.0 2 2
82.0 2 2
81.5 1
81.0 1 1
80.5 1 1
79.5 1
78.5 2
78.0 1
77.5 1 1
77.0 1 2
76.0 2
75.5 1 2
75.0 1 1 3
74.0 3
73.5 1 2
73.0 1 1
72.0 3 1
71.5 2 1
71.0 1 1
70.5 1 1
70.0 5
69.5 1
69.0 1 2
68.5 1
68.0 1
67.5 1
67.0 1
66.5 1
65.5 1
65.0 1
63.5 1 1
62.5 1
62.0 1
61.5 1
60.0 1 1
59.5 1 1
59.0 1 1
58.5 1
58.0 1 1
57.5 1
57.0 1
56.0 1
55.5 1 2
55.0 1 1
54.5 1
54.0 1 1
50.5 1
49.5 1
48.0 2 1
46.5 1
44.0 1
42.0 1
37.5 1
35.5 1
26.5 1
24.0 1
American Mathematics Competitions
2005 AMC 12 B Results for Mississippi
Analysis
Table of Item Difficulty for the 2005
American High School Mathematics Examination
Tabulation of responses for all Participants
Percent of Responses
ITEM A B C D E OMITS ?
____ _____ _____ _____ _____ _____ _____ _____
1 9.07* 0.21 0.36 0.07 0.21 0.07 0.00
2 0.14 0.29 0.07 8.00* 0.71 0.79 0.00
3 0.14 0.21 7.93* 0.14 0.93 0.64 0.00
4 0.43 8.21* 0.29 0.21 0.21 0.64 0.00
5 5.14* 0.14 1.43 0.00 0.07 3.21 0.00
6 2.29* 0.50 0.50 0.43 0.64 5.64 0.00
7 0.86 1.43 0.14 1.14* 0.29 6.14 0.00
8 1.36 1.29 3.07* 0.00 1.36 2.93 0.00
9 0.43 5.71* 0.29 0.86 0.64 1.93 0.14
10 0.36 0.71 0.43 2.07 2.29* 4.07 0.07
11 1.79 1.64 0.71 3.21* 0.71 1.93 0.00
12 0.50 1.07 1.07 0.71* 0.21 6.43 0.00
13 0.71 1.21 0.21 0.36* 0.21 7.29 0.00
14 0.43 0.79 1.07 0.43 0.86* 6.43 0.00
15 0.43 0.57 0.79 3.43* 0.64 4.14 0.00
16 0.29 0.36 0.71 0.50* 0.43 7.71 0.00
17 0.29 0.64* 0.50 0.14 0.93 7.50 0.00
18 1.21 0.43 0.57* 0.36 0.43 7.00 0.00
19 0.29 0.21 0.29 0.50 1.36* 7.36 0.00
20 0.36 0.57 2.86* 0.57 1.93 3.71 0.00
21 0.36 0.29 0.79* 0.57 0.36 7.64 0.00
22 0.64 0.79 0.14 0.29 0.50* 7.64 0.00
23 0.14 0.57* 0.36 0.36 0.14 8.43 0.00
24 0.64* 0.36 0.57 0.50 0.21 7.71 0.00
25 0.86* 0.36 0.14 0.50 0.50 7.64 0.00
(*) Correct Response
(?) Response the computer was unable to read due to incomplete
erasures or two answers marked in the same column