How do a parameter and a statistic differ? Choose the correct answer below. A. A

Question

How do a parameter and a statistic differ? Choose the correct answer below. A. A parameter is a numerical measurement of a sample, a statistic is a numerical measurement of a population B. A parameter is a qualitative measurement of a sample, a statistic is a qualitative measurement of a population C. A parameter is a qualitative measurement of a population, a statistic is a qualitative measurement of a sample. D. A parameter is a numerical measurement of a population, a statistic is a numerical measurement of a sample

Explanation / Answer

Answer (D) a parameter is a numerical measurement of a population, a statistic is a numerical measurement of a sample.

Reason a statistic describes a sample while a parameter describes the entire population

Example - you randomly poll voters in an election. You find that 55% of the population plans to vote for candidate A. That is a statistic. Why? You only asked a sample of the population who they are voting for. You calculated what the population was likely to do based on the sample.

You could ask a class of third graders who likes vanilla ice-cream. 90% raise their hands. You have a parameter : 90% of that class likes vanilla ice-cream. You know this because you asked everyone in the class.

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