Probability

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Probability
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Overview

• Probability is the study of random events.
• The probability, or chance, that an event will
  happen can be described by a number between 0 and
  1
• A probability of 0, or 0, means the event has no
  chance of happening.
• A probability of 1/2 , or 50, means the event is
  just as likely to happen as not to happen.
• A probability of 1, or 100, means the event is
  certain to happen.

For instance, the probability of a coin landing
heads up is ½, or 50, This means you would
expect a coin to land heads up half of the time.
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Overview
You can represent the probability of an event by
marking it on a number line like this one
Impossible 0 0
Certain 1 100
50 50 Chance ½ , .5, 50

• The language of probability includes
• Experiment a systematic investigation where the
  answer is unknown
• Trial one specific instance of an experiment
• Outcome - the result of a single trial
• Event a selected outcome, such as getting an 11
  from rolling two dice
• Event Space/or Sample Space the set of all
  possible outcomes of an experiment

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Getting Started with Probability
To get an overview of probability, click on the
spinner and select the Introduction to
Probability lesson. Read through the examples
and take the quiz at the end.
Make sure you are in slide show view then CLICK
on the spinner
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Once you finish
Complete Probability Worksheet