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Nonequivalent groups pretest-posttest design studies can be best improved by:
Racial Classification
The categorization of humans into groups based on physical traits, ancestry, genetics or social relations, often criticized for its subjective and socially constructed nature.
Sunshine
The light and warmth that come from the sun, essential for the growth of plants and the wellbeing of humans.
United States Census
A nationwide survey conducted every ten years in the United States to collect demographic, economic, and housing data about the population.
Racial Categories
Socially constructed classifications of humans based on physical traits, ancestry, or genetics, often used to distinguish and segregate people.
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