Which quantity is a point estimate of a population proportion?
Correct answer: C. The sample proportion
- A. The confidence coefficient
- B. The population variance
- C. The sample proportion
- D. The sampling interval
Explanation
The sample proportion is used as the point estimate of the corresponding population proportion. A confidence coefficient describes reliability, not the estimated value itself.
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About Sampling and Estimation
Sampling covers population and sample, sampling frames, simple random, systematic, stratified, cluster and convenience methods, along with sampling and non-sampling errors. Estimation includes sample statistics, population parameters, point estimates, confidence intervals and margins of error, with attention to how sample size affects precision.
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