Estimation of the Mean

# Estimation of the Mean - Estimation of the Mean Point...

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Section 4.1 Page 1 Estimation of the Mean Point Estimators h A point estimator is a single number calculated from sample data that is used to estimate the value of a parameter. h Recall that statistics change value upon repeated sampling of the same population while parameters are fixed, but unknown. Examples: In General: g G is an estimator of an arbitrary parameter g What makes a “good” estimator? h Accuracy: An unbiased estimator of a parameter is one whose expected value is equal to the parameter of interest. h Precision: An estimator is more precise if its sampling distribution has a smaller standard error. (Note: standard error is the standard deviation of the sampling distribution.)

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Section 4.1 Unbiased Estimators h For normal populations of μ. h If you have multiple un distribution has the lea h For normal populations Point Estimate b Interval h Because is a continuo h However, if we expand associated with the inte Interval Estimate of the Me s, both the sample mean and sample median are un
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Estimation of the Mean - Estimation of the Mean Point...

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