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2025-05-21 · 3 min read

Weighted vs Unweighted Random Picks Explained

What does 'weighted probability' mean for a spinner wheel, and when should you use it?

An unweighted random pick gives every option exactly the same chance. Ten names means a 10% chance for each.

A weighted pick lets some options matter more than others. On Wheel of Names, the easiest way to weight an entry is to enter it more than once. Two copies of a name double its chance; three copies triple it.

When to weight: contests where a participant earned extra entries, classrooms rewarding effort with bonus tickets, or any scenario where outcomes shouldn't be perfectly equal.

When not to weight: anything that needs to feel obviously fair — coin flips, team captains, dispute resolution. Unequal chances erode trust if people don't know they exist.

Pro tip: if you weight entries, say so out loud. Transparency is what makes a random pick feel fair.