Fuel for thought
Published over 8 years ago. See the latest and most current information on Fuel for thought.
What is the minimum number of data points recommended to estimate standard deviation? This is one of the most common questions posed to statistical professionals. The common answer from most statistical professionals is “30.” So, why 30?
To answer the “Why 30?” question, read this brief discussion on the use of statistics to estimate population parameters: www.astm.org/standardization-news/data-points/why-30-ja17.html
PIN 27.2 Apr/May 2026
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