# Using the Sample Range as a Basis for Calculating Sample Size in Power Calculations

```@article{Browne2001UsingTS,
title={Using the Sample Range as a Basis for Calculating Sample Size in Power Calculations},
author={R. H. Browne},
journal={The American Statistician},
year={2001},
volume={55},
pages={293 - 298}
}```
• R. H. Browne
• Published 2001
• Mathematics
• The American Statistician
Lacking a sample standard deviation to use as an estimate of σ in sample size computations, consultants often divide a sample range (R) by a constant to estimate σ. To avoid underpowered studies, the estimate must have a high probability of being greater than or equal to σ. The probability of being greater than or equal to σ is estimated for R/6, R/4, and R/(standardized mean range) for various parent distributions and a range of sample sizes. Those probabilities are found to be quite low for… Expand
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