Estimating Probability

Reason For Learning

It is often impossible to know the exact or true probability of an event, for example the probability that an Australian has blue eyes. In this case, taking a sample of the Australian population, and determine the frequency of blue-eyed people provides an estimate of the true probability. This process is called sampling and only requires a small percentage of the total population to obtain a reasonably accurate estimate. It is important that a random sample is taken.

Learning Intention

To be able to make predictions of future outcomes by sampling and estimating.

Key Vocabulary Terms

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ACMSP293 Level 8

Explore the variation of means and proportions in representative data