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The sample mean is:

nevermind11111

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The sample mean is:

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the same for all distributions.

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a random variable specific to each distribution (i.e., it varies from sample to sample).

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an unknowable quantity.

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a good indicator of the spread of a data set.

Textbook

Introductory Statistics: A Problem-Solving Approach

Edition: 3^rd

Author: Kokoska

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