An IERI – International Educational Research Institute Journal
Table 1 Comparisons between reported sample statistics and analysis sample statistics
U.S. | Korea | Japan | Singapore | ||||||
|---|---|---|---|---|---|---|---|---|---|
Reported sample a | Analysis sample | Reported sample a | Analysis sample | Reported sample a | Analysis sample | Reported sample a | Analysis sample | ||
Sample Size | # Students | 7377 | 3255 | 4240 | 4102 | 4312 | 2719 | 4599 | 2270 |
# Schools | 239 | 217 | 150 | 150 | 146 | 107 | 164 | 160 | |
Achievement | Mean | 508 | 507 | 597 | 597 | 570 | 567 | 593 | 596 |
SD | 77 | 75 | 92 | 91 | 85 | 85 | 93 | 90 | |
Percentage of students whose teachers asked them to do the following in about half the lessons or more | Interpret data in tables, charts or graphs | 16% | 15% | 30% | 29% | 23% | 21% | 9% | 9% |
Write equations and functions to represent relationships | 46% | 41% | 64% | 66% | 63% | 63% | 39% | 39% | |
Apply facts, concepts and procedures to solve routine problems | 81% | 80% | 88% | 87% | 66% | 63% | 65% | 66% | |
Relate what they are learning in mathematics to their daily lives | 57% | 61% | 56% | 54% | 20% | 22% | 34% | 32% | |
Decide on their own procedures for solving complex problems | 44% | 44% | 57% | 59% | 21% | 20% | 21% | 21% | |
Work on problems for which there is no immediately obvious method of solution | 22% | 24% | 27% | 27% | 23% | 18% | 10% | 8% | |