Which of the following is true about statistics such as the sample mean or sample proportion? Multiple Choice 13:28 A statistic is always known. A statistic is a parameter. A statistic is a constant. A statistic is a random variable.
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A statistic is a numerical value calculated from a sample of data, such as the sample mean or sample proportion. A parameter, on the other hand, is a numerical value that describes a characteristic of a population. Show more…
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What is one of the distinctions between a population parameter and a sample statistic? Select one: a. A population parameter is only based on conceptual measurements, but a sample statistic is based on a combination of real and conceptual measurements b. A sample statistic changes each time you try to measure it, but a population parameter remains fixed c. A population parameter changes each time you try to measure it, but a sample statistic remains fixed across samples. d. The true value of a sample statistic can never be known but the true value of a population parameter can be known
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