Results 201 to 210 of about 701,480 (245)
Some of the next articles are maybe not open access.
2000
Abstract For the comparison of means or proportions, as in a clinical trial or epidemiological study, we plan a significance test. The power of a test is the probability that the study will give a significant difference if the difference in the whole population is some chosen value.
Martin Bland, Janet Peacock
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Abstract For the comparison of means or proportions, as in a clinical trial or epidemiological study, we plan a significance test. The power of a test is the probability that the study will give a significant difference if the difference in the whole population is some chosen value.
Martin Bland, Janet Peacock
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2015
One of the questions most frequently asked of a statistician is: How big should the sample be? Managers are anxious to obtain an answer to this fundamental question during the planning phase of the survey since it impacts directly on operational considerations such as the number of interviewers required.
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One of the questions most frequently asked of a statistician is: How big should the sample be? Managers are anxious to obtain an answer to this fundamental question during the planning phase of the survey since it impacts directly on operational considerations such as the number of interviewers required.
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On the Determination of Sample Size
Epidemiology, 2003Epidemiologists face issues of sample size every time they design a study. Sample size determi? nation has two distinct aspects. One is the tech? nical aspect of how to calculate the sample size re? quired to meet the desired Type I error rate and the power for any specified state of nature. (By "state of nature," I mean the exact point in the relevant
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2016
Basic theoretical basis for determining required sample sizes using various theories are set. Examples are used in each case.
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Basic theoretical basis for determining required sample sizes using various theories are set. Examples are used in each case.
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Increasing the size and complexity of discrete 2D metallosupramolecules
Nature Reviews Materials, 2021Heng Wang, Yiming Li, Na Li
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