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Ch7PPT - Chapter 7 Sampling and Sampling Distributions Aims...

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Chapter 7 – 1 Chapter 7: Sampling and Sampling Distributions Aims of Sampling Basic Principles of Probability Types of Random Samples Sampling Distributions Sampling Distribution of the Mean Standard Error of the Mean The Central Limit Theorem
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Chapter 7 – 2 Sampling Population – A group that includes all the cases (individuals, objects, or groups) in which the researcher is interested. Sample – A relatively small subset from a population.
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Chapter 7 – 3 Notation
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Chapter 7 – 4 Sampling Parameter – A measure (for example, mean or standard deviation) used to describe a population distribution. Statistic – A measure (for example, mean or standard deviation) used to describe a sample distribution.
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Chapter 7 – 5 Sampling: Parameter & Statistic
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Chapter 7 – 6 Probability Sampling Probability sampling – A method of sampling that enables the researcher to specify for each case in the population the probability of its inclusion in the sample.
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Chapter 7 – 7 Random Sampling Simple Random Sample – A sample
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