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The most effective advance directive is a durable power of attorney for health care.
Test Norms
Statistical standards that allow the comparison of scores on a test to a larger, well-defined population.
Derived Score
A statistical measure calculated from raw data, often used to compare individual performance to a normative group.
40th Percentile
A statistical measure indicating that 40 percent of the population falls below a particular value or performance level, commonly used to assess and compare individual scores or characteristics.
Standardized Test
An examination administered and scored in a consistent manner across different individuals to measure their educational achievement or other attributes.
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