Which statement describes the difference between a population parameter and a sample statistic?

Which statement describes the difference between a population parameter and a sample statistic?

• A. A parameter is always known exactly; a statistic is always estimated
• B. Parameter describes the population; statistic describes a sample
• C. A statistic describes the population; a parameter describes the sample
• D. A parameter is a measurement; a statistic is a hypothesis

Answer: (B)