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Questions and Answers
When can sample data be used to generalize about the entire population?
When can sample data be used to generalize about the entire population?
- When the sample size is small
- When the sample is selected in a representative manner (correct)
- When the sample is selected without any specific criteria
- When the sample includes only specific cases
What is the purpose of sampling techniques?
What is the purpose of sampling techniques?
- To reduce the amount of data needed by considering data from a sub-group (correct)
- To generalize about all cases without collecting any sample data
- To ensure collection of data from all possible cases or elements
- To make inferences without considering any sub-group data
What does it mean to infer from sample data?
What does it mean to infer from sample data?
- To collect additional data to validate the sample findings
- To assume that the sample represents only a small portion of the population
- To disregard the sample and focus only on individual cases
- To draw conclusions about the entire population based on the sample (correct)
Why should one not assume that a census would necessarily provide more useful results than collecting data from a sample?
Why should one not assume that a census would necessarily provide more useful results than collecting data from a sample?
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In what situation is it possible to collect data from an entire population?
In what situation is it possible to collect data from an entire population?
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Study Notes
Sampling and Generalization
- Sample data can be used to generalize about the entire population when the sample is representative and randomly selected.
- The purpose of sampling techniques is to obtain a manageable subset of data that can be used to make inferences about the entire population.
Inference and Census
- To infer from sample data means to draw conclusions about the entire population based on the trends and patterns observed in the sample.
- One should not assume that a census would necessarily provide more useful results than collecting data from a sample, as a census may be impractical, time-consuming, and expensive, and may not provide more accurate results.
Collecting Data from the Entire Population
- It is possible to collect data from an entire population in situations where the population is small, easily accessible, and has a clear boundary, such as a school or a small business.
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