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Sampling and Sampling Distributions
2014Often we are interested in the parameters of a population. For example, a manager may be interested in knowing whether the average life of the light bulbs produced yesterday equals or exceeds 300 h. One way to conduct this analysis is to use a census; that is, light up all of the light bulbs produced yesterday and determine the average life.
Lie Jane Kao +2 more
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Sampling and Sampling Distributions
2012In this chapter, we take an in-depth look at the operational end of statistical analysis. Statistical analysis primarily involves selecting parts of populations (known as samples) and analyzing them in order to make inferences about the populations.
John C. Lee, Alice C Lee, Cheng-Few Lee
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Sampling and Sampling Distributions
2020This chapter introduces the notion of taking a random sample from a population and considers how one may use sample statistics to infer things about possibly unknown population parameters. Classical results about the sample mean and sample variance are stated, and here famous continuous distributions which are the cornerstone for statistical inference ...
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Sampling and the Sampling Theorem
2018When we do the Fourier or Laplace transform, or when we do their inverse transform we inevitably sample the signal—either in the time domain (former) or frequency domain (latter). The moment we migrate from equations to numbers sampling happens. Question then arises—how fine of a resolution does sampling needs to happen at?
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1986
A sample divider is used not only in stratified sampling but also in stage sampling for obtaining a laboratory or analytical sample. Here the unit to be investigated is either repeatedly divided into two parts, as in a riffler, until the sample size has been reached (Figure 8.1.1), or metered directly into the corresponding portion size on a rotary ...
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A sample divider is used not only in stratified sampling but also in stage sampling for obtaining a laboratory or analytical sample. Here the unit to be investigated is either repeatedly divided into two parts, as in a riffler, until the sample size has been reached (Figure 8.1.1), or metered directly into the corresponding portion size on a rotary ...
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Journal of Forensic Sciences, 1999
Abstract It is thought that, in a consignment of discrete units, a certain propotion of the units contain illegal material. A sample of the consignment is to be inspected. Various methods for the determination of the sample size are compared.
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Abstract It is thought that, in a consignment of discrete units, a certain propotion of the units contain illegal material. A sample of the consignment is to be inspected. Various methods for the determination of the sample size are compared.
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Sampling and sample preparation
1998It is essential that the material actually analysed either be representative of the material available, or be that most appropriate for solving the particular problem presented.
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Sampling, Sample Moments, Sampling Distributions, and Simulation [PDF]
, 1996 Beginning with this chapter, we turn our attention toward concepts and procedures that are explicitly related to the problem of statistical inference. Prior to this point, our study of probability theory and its implications has essentially addressed questions of deduction: “Given a probability space, what can we deduce about the characteristics of ...
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