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For Students · Win Probability

Win Probability for a javelin throw

Built for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition. Simulate a javelin throw live below — adjust the inputs and watch it respond, right in your browser.

Live Win ProbabilityLive

Controls

Presets

Win probability turns the score and clock into a live percentage. Early on, even a big lead is fragile because plenty of scoring remains; late in the game, the same lead is nearly safe because the uncertainty has shrunk. Modeling the remaining margin as a shrinking random variable produces the classic curve that broadcasts now show on screen.

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Data Inspector

Win probability82.5%
Lead+5
Time left10 min

Governing equation

Reading this result: A 5-point lead is still soft with 10 min on the clock — plenty of scoring remains, keeping win probability near 83%.

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Frequently asked questions

Is this good for students?
Yes — this version of "Win Probability for a javelin throw" is framed for students learning it for a class or exam. See the concept move instead of memorizing formulas — and check your homework intuition.
Do I need to install anything?
No. It runs in any modern browser, free, with no account required.