Cochran's Rule for Simple Random Sampling
Journal of the Royal Statistical Society Series B (Statistical Methodology)Published 1 November 2000Open access
R. A. Sugden, T. M. F. Smith, R. P. Jones
Citations43
SJR quartileQ1
SJR score3.31
SNIP2.48
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Abstract
Summary Cochran's rule for the minimum sample size to ensure adequate coverage of nominal 95% confidence intervals is derived by using the Edgeworth expansion for the distribution function of the standardized sample mean. The rule is extended for confidence intervals based on the Studentized sample mean. The performance of the rule and Edgeworth approximations for smaller sample sizes are examined by simulation.
Keywords
Computer ScienceMathematicsPhysics and Astronomy
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