57. The sample mean is a:
(A) Parameter
(B) Statistic
(C) Variable
(D) Constant
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c) variable
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Step-by-step explanation:
The average of sample values is a statistic. The function and for the value of the function on a given data statistics value is used. Statistics is used for a specific purpose. Without surveying the large data we recommend to analyse by sample mean. It is useful because it help you to analyse the data in a very simple way without analyse the data of every unit.
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