| 2004 long-term trend mathematics, percentage of students, average scale score, and percentage at or above each performance level, by contextual variable, age 9: Selected years, 1978–2004 |
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| Statistic |
Contextual variable |
1978 |
1982 |
1986 |
1990 |
1992 |
1994 |
1996 |
1999 |
2004 Bridge |
| Percentage of students |
TV watched each day |
0 - 2 hours |
— |
— |
|
44 |
(1.1) |
* |
29 |
(0.9) |
* |
37 |
(0.9) |
* |
40 |
(1.0) |
* |
43 |
(1.0) |
* |
47 |
(1.1) |
* |
46 |
(1.2) |
* |
51 |
(1.0) |
|
| 3 - 5 hours |
— |
— |
|
29 |
(0.6) |
|
40 |
(0.8) |
* |
39 |
(0.7) |
* |
41 |
(0.8) |
* |
38 |
(0.9) |
* |
36 |
(1.0) |
* |
35 |
(0.7) |
* |
31 |
(1.0) |
|
| 6 or more hours |
— |
— |
|
26 |
(1.0) |
* |
31 |
(1.1) |
* |
23 |
(0.8) |
* |
19 |
(0.8) |
|
19 |
(0.8) |
|
18 |
(0.9) |
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19 |
(0.9) |
|
18 |
(0.8) |
|
| Average scale score |
TV watched each day |
0 - 2 hours |
— |
— |
|
218 |
(1.4) |
* |
222 |
(1.5) |
* |
231 |
(1.2) |
* |
231 |
(1.1) |
* |
232 |
(0.9) |
* |
233 |
(1.2) |
* |
235 |
(1.0) |
* |
244 |
(1.2) |
|
| 3 - 5 hours |
— |
— |
|
227 |
(1.1) |
* |
229 |
(1.1) |
* |
234 |
(0.9) |
* |
233 |
(1.0) |
* |
235 |
(1.0) |
* |
234 |
(1.0) |
* |
235 |
(1.2) |
* |
245 |
(1.3) |
|
| 6 or more hours |
— |
— |
|
215 |
(1.2) |
* |
213 |
(1.4) |
* |
220 |
(1.4) |
* |
219 |
(1.4) |
* |
222 |
(1.3) |
* |
220 |
(1.4) |
* |
219 |
(1.4) |
* |
229 |
(1.2) |
|
| Percent at or above level 150 |
TV watched each day |
0 - 2 hours |
— |
— |
|
97 |
(0.6) |
* |
98 |
(0.5) |
* |
99 |
(0.2) |
|
99 |
(0.3) |
|
99 |
(0.3) |
|
99 |
(0.2) |
|
99 |
(0.2) |
|
100 |
(0.2) |
|
| 3 - 5 hours |
— |
— |
|
99 |
(0.2) |
* |
99 |
(0.3) |
|
99 |
(0.3) |
|
99 |
(0.2) |
|
99 |
(0.3) |
|
99 |
(0.3) |
|
99 |
(0.3) |
|
100 |
(0.2) |
|
| 6 or more hours |
— |
— |
|
97 |
(0.4) |
|
97 |
(0.6) |
|
98 |
(0.6) |
|
98 |
(0.6) |
|
99 |
(0.5) |
|
98 |
(0.6) |
|
98 |
(0.5) |
|
98 |
(0.5) |
|
| Percent at or above level 200 |
TV watched each day |
0 - 2 hours |
— |
— |
|
70 |
(1.6) |
* |
73 |
(1.9) |
* |
82 |
(1.4) |
* |
83 |
(1.1) |
* |
82 |
(0.8) |
* |
82 |
(1.0) |
* |
85 |
(1.1) |
* |
90 |
(1.0) |
|
| 3 - 5 hours |
— |
— |
|
80 |
(1.4) |
* |
81 |
(1.1) |
* |
86 |
(1.1) |
* |
85 |
(1.1) |
* |
86 |
(1.2) |
* |
86 |
(1.3) |
* |
86 |
(1.1) |
* |
92 |
(1.2) |
|
| 6 or more hours |
— |
— |
|
68 |
(1.5) |
* |
66 |
(1.9) |
* |
73 |
(1.8) |
* |
71 |
(2.0) |
* |
74 |
(2.0) |
* |
71 |
(1.9) |
* |
72 |
(1.8) |
* |
80 |
(1.6) |
|
| Percent at or above level 250 |
TV watched each day |
0 - 2 hours |
— |
— |
|
19 |
(1.3) |
* |
22 |
(1.4) |
* |
29 |
(1.7) |
* |
30 |
(1.2) |
* |
31 |
(1.7) |
* |
32 |
(1.5) |
* |
34 |
(1.7) |
* |
44 |
(1.5) |
|
| 3 - 5 hours |
— |
— |
|
25 |
(1.1) |
* |
26 |
(1.4) |
* |
32 |
(1.2) |
* |
31 |
(1.3) |
* |
34 |
(1.6) |
* |
32 |
(1.9) |
* |
34 |
(1.5) |
* |
46 |
(1.8) |
|
| 6 or more hours |
— |
— |
|
14 |
(1.5) |
* |
13 |
(1.1) |
* |
19 |
(1.4) |
* |
19 |
(1.4) |
* |
20 |
(1.5) |
* |
19 |
(2.1) |
* |
18 |
(1.7) |
* |
28 |
(1.6) |
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| — Not available. Sample size is insufficient to permit a reliable estimate, or data are not available for this assessment year. |
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| * Significantly different from 2004 bridge assessment. |
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| NOTE: Standard errors of the estimates appear in parentheses. Detail may not sum to totals because of rounding. |
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| SOURCE: U.S. Department of Education, Institute of Education Sciences, National Center for Education Statistics, National Assessment of Educational Progress (NAEP), selected years, 1978–2004 Long-Term Trend Mathematics Assessments. |
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View other 2004 long-term trend summary data tables.
Last updated 05 July 2005 (FW)
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