Final answer:
The importance of random samples and sample size in obtaining accurate public opinion data is crucial in social studies.
Explanation:
Correct Statements:
- A sample refers to the group selected by a researcher to represent the most important characteristics of an entire population.
- It is possible to estimate the country's opinion based on a small sample of 1,000 to 1,200 people.
Incorrect Statements:
- Public-opinion surveys only tell you what the sample's opinions are, without providing any insight into the general population.
- It is impossible to collect a random sample.
When conducting polls or surveys, it is essential to use random samples to ensure representativeness and accuracy. Sample size also plays a crucial role in obtaining reliable results. Upholding the principles of proper sampling techniques is vital for obtaining accurate public opinion data.
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