Experimental probability

There are 46 NRICH Mathematical resources connected to Experimental probability
Odds and Evens made fair
problem

Odds and Evens made fair

Age
14 to 16
Challenge level
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In this follow-up to the problem Odds and Evens, we invite you to analyse a probability situation in order to find the general solution for a fair game.
Red or Black Spinner
interactivity

Red or Black Spinner

A simple spinner that is equally likely to land on Red or Black. Useful if tossing a coin, dropping it, and rummaging about on the floor have lost their appeal. Needs a modern browser; if IE then at least version 9.
Probably a code?
problem

Probably a code?

Age
16 to 18
Challenge level
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Is the regularity shown in this encoded message noise or structure?
Which spinners?
problem

Which spinners?

Age
14 to 18
Challenge level
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Can you work out which spinners were used to generate the frequency charts?
Statistical shorts
problem

Statistical shorts

Age
11 to 16
Challenge level
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Can you decide whether these short statistical statements are always, sometimes or never true?
Who's the winner?
problem

Who's the winner?

Age
14 to 16
Challenge level
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When two closely matched teams play each other, what is the most likely result?
What does random look like?
problem

What does random look like?

Age
11 to 14
Challenge level
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Engage in a little mathematical detective work to see if you can spot the fakes.
The car that passes
problem

The car that passes

Age
7 to 11
Challenge level
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What statements can you make about the car that passes the school gates at 11am on Monday? How will you come up with statements and test your ideas?
In the Playground
problem

In the Playground

Age
5 to 11
Challenge level
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What can you say about the child who will be first on the playground tomorrow morning at breaktime in your school?