Examlex
Because each stratum is represented exactly in proportion to its size in the population from which the sample is drawn, by using proportionate stratified sampling you would eliminate any possibility of error in distribution of a variable.
Psychological Test
a standardized measure used to evaluate an individual's mental and emotional functioning from various aspects.
Reliability
The degree to which an assessment tool produces stable and consistent results over multiple administrations under similar conditions.
Flynn Effect
The observed rise over time in standardized intelligence test scores, attributed to various factors including better nutrition and education.
WISC-IV
The Wechsler Intelligence Scale for Children, Fourth Edition, a tool used to measure a child's intellectual abilities and cognitive strength and weaknesses.
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