
Distributions
7-11 Distributions
Though there are a number of different types of distributions, the one most commonly used is the “Normal Distribution”, which is an essential type of distribution for statistical calculations. Other types of distributions include the Poisson distribution and geometric distribution. The type of distribution used depends on the type of data being handled.
The shape of a distribution makes it possible to determine trends in data somewhat. You can specify a value and calculate the probability that any data value from the distribution is, for example, less than the specifi ed value. In other words, you can determine what percent from the bottom that data value occurs within the distribution.
The following is a list of distributions and the description of what each one calculates.
| Distribution Name | Description |
Normal Distribution |
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| Normal Probability Density | Calculates the normal probability density for a specified |
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| value. |
| Normal Cumulative | Calculates the cumulative probability of a normal distribution |
| Distribution | between a lower bound and an upper bound. |
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| Inverse Normal Cumulative | Calculates the boundary value(s) of a normal cumulative |
| Distribution | probability distribution for specified values. |
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t Distribution |
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| Calculates the | |
| Density | value. |
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| Calculates the cumulative probability of a | |
| Distribution | distribution between a lower bound and an upper bound. |
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| Inverse | Calculates the lower bound value of a |
| Cumulative Distribution | probability distribution for specified values. |
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χ2 Distribution |
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| χ2 Probability Density | Calculates the χ2 probability density for a specified value. |
| χ2 Cumulative Distribution | Calculates the cumulative probability of a χ2 distribution |
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| between a lower bound and an upper bound. |
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| Inverse χ2 Cumulative | Calculates the lower bound value of a χ2 cumulative |
| Distribution | probability distribution for specified values. |
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F Distribution |
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| F Probability Density | Calculates the F probability density for a specified value. |
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| F Cumulative Distribution | Calculates the cumulative probability of an F distribution |
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| between a lower bound and an upper bound. |
| Inverse F Cumulative | Calculates the lower bound value of an F cumulative |
| Distribution | probability distribution for specified values. |
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