quincunx board

Definition

Tool used quality control training to demonstrate creation of frequency distributions. It consists of a rectangular box with an upper chamber containing a large number of beads which are fed into a triangular hopper through a horizontal sliding bar. Beads tumble over several rows of pins which force the bead to go either left or right. After a random journey, beads drop into several vertical slots to create a frequency distribution. Invented by the UK scientist Francis Galton in 1890s.

单词	quincunx board
释义	quincunx board Definition Tool used quality control training to demonstrate creation of frequency distributions. It consists of a rectangular box with an upper chamber containing a large number of beads which are fed into a triangular hopper through a horizontal sliding bar. Beads tumble over several rows of pins which force the bead to go either left or right. After a random journey, beads drop into several vertical slots to create a frequency distribution. Invented by the UK scientist Francis Galton in 1890s.
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