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13. (3 pts) In a complete sentence, explain the difference between u and ux . (There...

13. (3 pts) In a complete sentence, explain the difference between u and ux . (There is a difference.

Math   Statistics-And-Probability   
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Answer #1

, which is the population mean is a parameter which describes the population in question, whereas , which is a point estimator of the population mean is a sample statistic and it describes the sample that has been taken from the population.

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is commonly denoted as (x bar). It is a statistic which is used to estimate the population mean. The population mean, , is a value or a characteristic of the population which has been already calculated by methods such as census or data accumulation, etc.

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