American Journal of Science · 1965 · 571 citations · 0 references
Social SciencesQuality ManagementMetrologyStatisticsChart DesignControl ChartsMeasurement ErrorReliabilityStatistical GraphicsTest ReliabilityGrain Size MeasurementStatistical Chart Design
"The chart presented here, for judging the reliability of point-counting results, is based on twice the standard deviation. For its use, the point distance should be larger than the largest grain size included in the modal analysis."