We offer a 7 day replacement guarantee on all items that arrive defective or damaged. View our full policy here.
All payment methods are fully secure via SSL. We have the following payment methods available: Credit & Cheque Card; Instant EFT; QR Code Apps; Debit Card; MobiCred; and SCode.
Description
Description:
Place a small round glass ball with a diameter slightly smaller than the distance between two nails at the entrance. As the ball descends, it rolls down to the left or right with a probability of 1/2 after hitting the nails, and then touches the next layer of nails. Continue like this until you roll into a grid on the bottom plate. Continuously dropping numerous small balls of the same size from the entrance, as long as the number of balls is quite large, they will be stacked on the bottom plate to form an approximately normal density function graph (i.e., a symmetrical ancient bell shape with a high middle and low ends), where n is the number of layers of nails.
This is a model designed by British biostatistician Galton to study random phenomena.
Specification:
Brand: NIKOLATOY
Product Name:Galton board normal distribution model
Product Color: As Shown
Optional Size Version: S ( Small Size) / L ( Large Size)
Product Size: 12x17cm ( S Version) / 23x31cm ( L Version)
Weight: 150g ( S Version) / 670g ( L Version)
Package included:
1X Galton Board Normal Distribution Model
