Page 32 - Statistics and Data Analysis in Geology

Elementary Statistics

Figure 2-5. Discrete distribution giving the cumulative probability that two discoveries will
be made by or before a specified hole when the probability of a discovery is 25%.

Number of holes drilled
Figure 2-6. Discrete distribution giving the probability that more than a specified number
of holes must be drilled to make two discoveries when the probability of a discovery
is 25%.

There are other discrete probability distributions that apply to experimental
situations similar to those appropriate for the binomial. These include the Poisson
distribution, which can be used instead of the binomial when p, the probability
of success, is very small. The Poisson distribution will be discussed in Chapter
4, where it will be applied to the analysis of rare, random events in time (such as
earthquakes or volcanic eruptions), and in Chapter 5, where it will serve as a model

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