distChooseCensored.object | R Documentation |

Objects of S3 class `"distChooseCensored"`

are returned by the EnvStats function
`distChooseCensored`

.

Objects of S3 class `"distChooseCensored"`

are lists that contain
information about the candidate distributions, the estimated distribution
parameters for each candidate distribution, and the test statistics and
p-values associated with each candidate distribution.

**Required Components**

The following components must be included in a legitimate list of
class `"distChooseCensored"`

.

`choices` |
a character vector containing the full names
of the candidate distributions. (see |

`method` |
a character string denoting which method was used. |

`decision` |
a character vector containing the full name of the chosen distribution. |

`alpha` |
a numeric scalar between 0 and 1 specifying the Type I error associated with each goodness-of-fit test. |

`distribution.parameters` |
a numeric vector containing the estimated parameters associated with the chosen distribution. |

`estimation.method` |
a character string indicating the method
used to compute the estimated parameters associated with the chosen
distribution. The value of this component will depend on the
available estimation methods (see |

`sample.size` |
a numeric scalar containing the number of non-missing observations in the sample used for the goodness-of-fit tests. |

`censoring.side` |
character string indicating whether the data are left- or right-censored. |

`censoring.levels` |
numeric scalar or vector indicating the censoring level(s). |

`percent.censored` |
numeric scalar indicating the percent of non-missing observations that are censored. |

`test.results` |
a list with the same number of components as the number
of elements in the component |

`data.name` |
character string indicating the name of the data object used for the goodness-of-fit tests. |

`censoring.name` |
character string indicating the name of the data object used to identify which values are censored. |

**Optional Components**

The following components are included in the result of
calling `distChooseCensored`

when the argument `keep.data=TRUE`

:

`data` |
numeric vector containing the data actually used for the goodness-of-fit tests (i.e., the original data without any missing or infinite values). |

`censored` |
logical vector containing the censoring status for the data actually used for the goodness-of-fit tests (i.e., the original data without any missing or infinite values). |

The following component is included in the result of
calling `distChooseCensored`

when missing (`NA`

),
undefined (`NaN`

) and/or infinite (`Inf`

, `-Inf`

)
values are present:

`bad.obs` |
numeric scalar indicating the number of missing ( |

Generic functions that have methods for objects of class
`"distChooseCensored"`

include:

`print`

.

Since objects of class `"distChooseCensored"`

are lists, you may extract
their components with the `$`

and `[[`

operators.

Steven P. Millard (EnvStats@ProbStatInfo.com)

`distChooseCensored`

, `print.distChooseCensored`

,
Censored Data,
Goodness-of-Fit Tests,
`Distribution.df`

.

```
# Create an object of class "distChooseCensored", then print it out.
# (Note: the call to set.seed simply allows you to reproduce
# this example.)
set.seed(598)
dat <- rgammaAlt(30, mean = 10, cv = 1)
censored <- dat < 5
dat[censored] <- 5
distChooseCensored.obj <- distChooseCensored(dat, censored,
method = "sw", choices = c("norm", "gammaAlt", "lnormAlt"))
mode(distChooseCensored.obj)
#[1] "list"
class(distChooseCensored.obj)
#[1] "distChooseCensored"
names(distChooseCensored.obj)
# [1] "choices" "method"
# [3] "decision" "alpha"
# [5] "distribution.parameters" "estimation.method"
# [7] "sample.size" "censoring.side"
# [9] "censoring.levels" "percent.censored"
#[11] "test.results" "data"
#[13] "censored" "data.name"
#[15] "censoring.name"
distChooseCensored.obj
#Results of Choosing Distribution
#--------------------------------
#
#Candidate Distributions: Normal
# Gamma
# Lognormal
#
#Choice Method: Shapiro-Wilk
#
#Type I Error per Test: 0.05
#
#Decision: Gamma
#
#Estimated Parameter(s): mean = 12.4911448
# cv = 0.7617343
#
#Estimation Method: MLE
#
#Data: dat.censored
#
#Sample Size: 30
#
#Censoring Side: left
#
#Censoring Variable: censored
#
#Censoring Level(s): 5
#
#Percent Censored: 23.33333%
#
#Test Results:
#
# Normal
# Test Statistic: W = 0.9372741
# P-value: 0.1704876
#
# Gamma
# Test Statistic: W = 0.9613711
# P-value: 0.522329
#
# Lognormal
# Test Statistic: W = 0.9292406
# P-value: 0.114511
#==========
# Extract the choices
#--------------------
distChooseCensored.obj$choices
#[1] "Normal" "Gamma" "Lognormal"
#==========
# Clean up
#---------
rm(dat, censored, distChooseCensored.obj)
```

EnvStats documentation built on Aug. 22, 2023, 5:09 p.m.

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