Draw simulator · LESSON 4
Weighted draw ① — interval draw
A person with a higher weight score gets a wider slot. A random number is more likely to land in a wide slot, so their win chance is higher.
Method ①
Draw by winning interval
Our method first shuffles the entrant order at random, then gives each a slot (winning interval) as wide as their weight score. Change weights with +/−, then ① shuffle and ② draw the target value.
Entrant settings — adjust weights with +/− and the intervals update instantly
Tap a name to edit, ✕ to delete. Each addition gets a new color.
Weight interval per entrant
16
Slot size = weight score = win probability. Even if the order is shuffled, each slot width (= probability) stays the same, so it is fair.
This is the first of Unipicker's two weighted-draw methods. On the next page, meet the second, the "Key value" method.
※ This simulator generates randomness on the spot using the browser's built-in secure random number source (crypto.getRandomValues). In production, Unipicker uses an externally published seed such as DRAND.