Examlex
NREM stage 1 sleep involves _______ waves.
Proportional Sample
A sampling method in statistical research where the sample size from each subgroup is proportional to the overall proportions of those subgroups in the total population.
Representative Sample
A segment of a population that accurately represents the attributes of the total population.
Random Sample
A sampling method where each member of a population has an equal chance of being included in the sample, reducing bias and increasing the generalizability of results.
Representative Sample
A part of a population that precisely mirrors the characteristics of the whole population.
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