5 Questions
When can sample data be used to generalize about the entire population?
When the sample is selected in a representative manner
What is the purpose of sampling techniques?
To reduce the amount of data needed by considering data from a sub-group
What does it mean to infer from sample data?
To draw conclusions about the entire population based on the sample
Why should one not assume that a census would necessarily provide more useful results than collecting data from a sample?
Because collecting data from a representative sample can provide equally useful results
In what situation is it possible to collect data from an entire population?
When the population size is manageable
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.
Learn about the various methods of selecting samples in business research, including how to reduce the amount of data needed to be collected and generalize findings from a sub-group to the entire population.
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