QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
Determine whether the following statement is true or false. Explain.
When obtaining a stratified sample, the number of individuals included within each stratum must be equal.
Choose the correct answer below.
$\bigcirc$ A. True, because if there is a stratum with more or less individuals, it will be weighted more or less than the other strata. This will introduce bias.
$\oplus$ B. False, because as long as each stratum has a threshold number of individuals representative of the variation in the population, results are meaningful. The number of individuals does not need to be exactly equal.
$\bigcirc$ C. True, because if some strata have significantly less individuals than others, there can be no meaningful results from them.
$\bigcirc$ D. False. The individuals in each stratum must be homogenous.
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Answer
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Step 1I'll solve this problem step by step, focusing on the statistical concept of stratified sampling.
Step 2: Understand Stratified Sampling
Stratified sampling is a sampling technique where the population is divided into subgroups (strata) based on shared characteristics. The goal is to ensure that each stratum represents a specific segment of the population.
Final Answer
The number of individuals in each stratum does not need to be exactly equal, as long as each stratum adequately represents its population segment.
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