Moving averages are widely used in economics and finance. A great variety of lengths are used: 20-day, 50-day, 200-day, etc. These contain different amounts of information, but not for the reason you ...

Corrected: An earlier version of this story provided an incorrect figure for how many states surpassed the international average for 8th graders in math and science. The figure for math is 35 states; ...

The math and science achievement of U.S. students continues to surpass the global average for nations taking part in a prominent assessment, results issued Tuesday show, but several East Asian ...

Every two years, hundreds of thousands of American fourth and eighth grade students take a test called the National Assessment of Educational Progress. The test evaluates students’ reading and math ...

Students in the United States rank below average in math and average in reading and science among 34 nations, according to Programme for International Student Assessment results released Tuesday. The ...