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  2. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample size used in a study is usually determined based on the cost, time, or convenience of collecting the data, and the need for it to offer sufficient statistical power .

  3. PS Power and Sample Size - Wikipedia

    en.wikipedia.org/wiki/PS_Power_and_Sample_Size

    A description of each calculation, written in English, is generated and may be copied into the user's documents. Interactive help is available. The program provides methods that are appropriate for matched and independent t-tests, [ 2 ] survival analysis, [ 5 ] matched [ 6 ] and unmatched [ 7 ] [ 8 ] studies of dichotomous events, the Mantel ...

  4. PASS Sample Size Software - Wikipedia

    en.wikipedia.org/wiki/PASS_Sample_Size_Software

    PASS is a computer program for estimating sample size or determining the power of a statistical test or confidence interval. NCSS LLC is the company that produces PASS. NCSS LLC also produces NCSS (for statistical analysis). PASS includes over 920 documented sample size and power procedures.

  5. Acceptance sampling - Wikipedia

    en.wikipedia.org/wiki/Acceptance_sampling

    MIL-STD-105E was cancelled in 1995 but is available in related documents such as ANSI/ASQ Z1.4, "Sampling Procedures and Tables for Inspection by Attributes". Several levels of inspection are provided and can be indexed to several AQLs. The sample size is specified and the basis for acceptance or rejection (number of defects) is provided. MIL ...

  6. nQuery Sample Size Software - Wikipedia

    en.wikipedia.org/wiki/NQuery_Sample_Size_Software

    nQuery is a clinical trial design platform used for the design and monitoring of adaptive, group sequential, and fixed sample size trials. It is most commonly used by biostatisticians to calculate sample size and statistical power for adaptive clinical trial design. nQuery is proprietary software developed and distributed by Statsols. The ...

  7. Sampling risk - Wikipedia

    en.wikipedia.org/wiki/Sampling_risk

    Sampling risk is one of the many types of risks an auditor may face when performing the necessary procedure of audit sampling. Audit sampling exists because of the impractical and costly effects of examining all or 100% of a client's records or books. As a result, a "sample" of a client's accounts are examined. [1]

  8. Probability-proportional-to-size sampling - Wikipedia

    en.wikipedia.org/wiki/Probability-proportional...

    The pps sampling results in a fixed sample size n (as opposed to Poisson sampling which is similar but results in a random sample size with expectancy of n). When selecting items with replacement the selection procedure is to just draw one item at a time (like getting n draws from a multinomial distribution with N elements, each with their own ...

  9. Computer-aided audit tools - Wikipedia

    en.wikipedia.org/wiki/Computer-aided_audit_tools

    Sample (Random): Specifies whether the product supports selecting a random sample of rows from the table/file (population). Sample (Monetary unit): Specifies whether the product supports selecting a monetary unit sample of rows from the table/field (population). This is also known as dollar-unit sampling (when values are in U.S. currency).