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4 Tutorials that teach Sample Statistics and Population Parameters
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Sample Statistics and Population Parameters

Sample Statistics and Population Parameters

Author: Ryan Backman
Description:

This lesson will explain the distinction between sample statistics and population parameters, with a review of sampling distributions.

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Terms to Know
Population Mean

A mean for all values in the population. Denoted as mu.

Population Parameters

Summary values for the population. These are often unknown.

Sample Mean

A mean obtained from a sample of a given size.  Denoted as top enclose x.

Sample Statistics

Summary values obtained from a sample.

Sampling Distribution

The distribution of all possible values a statistic could take from samples of a given size.

Formulas to Know
Mean of a Sampling Distribution of Sample Means

mu subscript x with bar on top end subscript space equals space mu subscript p o p u l a t i o n end subscript

Standard Deviation of a Sampling Distribution of Sample Means

sigma subscript x with bar on top end subscript space equals space fraction numerator sigma subscript p o p u l a t i o n end subscript over denominator square root of n end fraction