WebFeb 16, 2024 · Revised on November 11, 2024. Statistical power, or sensitivity, is the likelihood of a significance test detecting an effect when there actually is one. A true effect is a real, non-zero relationship between variables in a population. An effect is usually indicated by a real difference between groups or a correlation between variables. WebMar 11, 2024 · General Facts, Statistics, and Trends There were about 3.1 million homeschool students in 2024-2024 in grades K-12 in the United States (roughly 6% of school-age children). There were about 2.5 million homeschool students in spring 2024 (or 3% to 4% of school-age children) [note 1].
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