# phase_statistics: Summary statistics of a phase In ArchaeoPhases: Post-Processing of the Markov Chain Simulated by 'ChronoModel', 'Oxcal' or 'BCal'

 phase_statistics R Documentation

## Summary statistics of a phase

### Description

Estimation of summary statistics for the beginning, end, and duration of a phase.

### Usage

```phase_statistics(min_chain, max_chain, level = 0.95, round_to = 0)
```

### Arguments

 `min_chain` Numeric vector containing the output of the MCMC algorithm for the start of the phase. `max_chain` Numeric vector containing the output of the MCMC algorithm for the end of the phase. `level` Probability corresponding to the level of confidence used for the credible interval and the highest density region. `round_to` Integer indicating the number of decimal places.

### Details

The summary statistics are those given by the `MarginalStatistics()` function. The time range is given by `PhaseTimeRange()` function. The duration is computed as follows: duration = maximum - minimum at each iteration of the MCMC output.

### Value

A list with the following components:

statistics

A data frame where the rows correspond to the summary statistics and the columns include: `start`, the start of the phase in calendar years (BC/AD); `end` the end of the phase in calendar years (BC/AD); and `duration` the duration of the phase in years.

level

Probability corresponding to the level of confidence used for the credible interval and the highest density region.

call

The function call.

### Author(s)

Anne Philippe, Anne.Philippe@univ-nantes.fr,

Marie-Anne Vibet, Marie-Anne.Vibet@univ-nantes.fr, and

Thomas S. Dye, tsd@tsdye.online

### Examples

```  data(Phases); attach(Phases)
phase_statistics(Phase.1.alpha, Phase.1.beta, 0.95)
phase_statistics(Phase.2.alpha, Phase.2.beta, 0.95)