For two-stage Quincunx
OwnerAldo A. Laghiinventor
Life of this patent
Estimating the term…
Abstract
A two-stage training device for statistical studies permits the demonstration of advanced statistical principles. Balls are dropped from an upper reservoir through a maze of pins which scatters the balls into a histogram having that shape of a normal curve. The balls from individual cells of the histograms are dropped through a second maze of pins into a second set of vertical cells to form a series of histograms. Dropping subsequent sets of balls from many of the upper cells, visually demonstrates, that: "The Sum Of Normal Independent Sets Of Events Is Normal".
Claims18
A training device for use in the teaching and the studying of statistics comprising:
- a support board having a top portion, middle portion and a bottom portion;
- a ball reservoir located on the top portion of the board;
- a conduit means operatively connected to a bottom portion of the ball reservoir;
- a first plurality of spaced pins mounted on said board below said conduit means, said pins extending outwards from a front face of said board, said pin spacing being greater than the diameter of a ball to be used in said device;
- a first plurality of compartments located on said board below said pins whereby a ball can pass through said plurality of pins and fall into one of said compartments;
- a stop means located at a bottom portion of said compartments capable of stopping the downward movement of a ball to be used in said device, said stop means being movable to allow an opening to be formed in at least one of said compartments whereby a ball could exit said at least one compartment;
- a second plurality of spaced pins mounted on said board similarly spaced and extending in the same manner as the first plurality of pins;
- and
- a second plurality of compartments, said compartments located on a bottom portion of said board below the second plurality of pins whereby a ball can pass through said second plurality of pins and fall into one of said second plurality of compartments.
A statistics training device comprising:
- a support means;
- a ball reservoir means located on an upper portion of said support means;
- a conduit means operatively connected to said reservoir;
- a first pinplate means connected to said support means and located below said conduit means, said pinplate means comprising a plurality of spaced pins extending away from said support means;
- a first plurality of compartments connected to said support means for receiving any balls which pass through said pinplate means;
- a second pinplate means connected to said support means, said second pinplate means located to receive any balls which pass through said first plurality of compartments, said second pinplate means comprising a plurality of spaced pins extending away from said support means;
- and
- a second plurality of compartments connected to said support means for receiving any balls which pass through said second pinplate means.
Dependencies are inferred from the claim text.