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### Pie Graphs and Probability

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Date: 09/21/2000 at 16:39:21
From: Kristine Pj
Subject: Pie graphs and probability

I don't know how to get the probability from a pie graph.
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Date: 09/21/2000 at 17:45:09
From: Doctor Ian
Subject: Re: Pie graphs and probability

Hi Kristine,

A pie graph or pie chart tells you what fraction of the time something
happened, or is expected to happen, and that's what probability tells
you, too. In fact, a pie graph is just a way of drawing probabilities
instead of writing them down using numbers.

For example, suppose a pie graph has three areas, with people who will
vote for Gore (41%), people who will vote for Bush (44%), and people
who will vote for someone else (11%).

This is like having 100 balls in a jar, with 41 marked 'Gore', 44
marked 'Bush', and 11 marked 'other'.

So the probability that you'll pull a 'Bush' ball out of the jar is
44/100.

I hope this helps.  Write back if I didn't quite answer your question,
or if you have other questions.

- Doctor Ian, The Math Forum
http://mathforum.org/dr.math/
```
Associated Topics:
Middle School Probability

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