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Unformatted text preview: 1 mpcpi2.ppt/histo1.xls  Mike Pore  Nov 1997 How are the distributed? The Distribution of Means x 2 mpcpi2.ppt/histo1.xls  Mike Pore  Nov 1997 Population vs. Sample Population vs. Sample Terminology Terminology • A population is the entire set or collection of measurements of interest. • A sample is a subset of data from the population. • A random sample is one in which each element is independent and has the same chance of being selected. • Methods exists for the selection of random samples. 3 mpcpi2.ppt/histo1.xls  Mike Pore  Nov 1997 Population vs. Sample Population vs. Sample Population Sample Probability Statistical Inference Notation: s x σ μ 4 mpcpi2.ppt/histo1.xls  Mike Pore  Nov 1997 Population vs. Sample Population vs. Sample and s are random variables and s are random variables Population Samples Notation: s x σ μ x n s x , , 1 1 n s x , , 2 2 n s x , , 3 3 n s x , , 4 4 5 mpcpi2.ppt/histo1.xls  Mike Pore  Nov 1997 The Distribution of Sample Means The Distribution of Sample Means Population Observations Distr of...
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This note was uploaded on 04/26/2010 for the course ECO 329 taught by Professor K during the Spring '08 term at University of Texas.
 Spring '08
 K

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