Life Distribution Report Options

The red triangle menu next to Life Distribution contains the following options:

Fits all distributions other than the threshold (TH) distributions. The distributions are compared in the Model Comparisons report. For details, see Compare Distributions.

Tip: Select the Comparison Criterion option to change the criterion for finding the best distribution.

Fit All Non-negative

Fits all nonnegative distributions (Exponential, Lognormal, Loglogistic, Fréchet, Weibull, and Generalized Gamma). The distributions are compared in the Model Comparisons report. See Compare Distributions. Note the following:

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The option does not fit DS or TH distributions.

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If the data have negative values, then the option produces no results.

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If the data have zeros, the option fits the four zero-inflated (ZI) distributions: ZI Lognormal, ZI Weibull, ZI Loglogistic, and ZI Fréchet. For details about zero-inflated distributions, see Zero-Inflated Distributions.

Fit All DS Distributions

Fits all defective subpopulation (DS) distributions: DS Lognormal, DS Weibull, DS Loglogistic, and DS Fréchet. For details about defective subpopulation distributions, see Distributions for Defective Subpopulations.

Fit Mixture

Fits a distribution that is a mixture of the distributions other than the threshold (TH) distributions. See Mixture.

Fit Competing Risk Mixture

Fits a competing risk mixture distribution to the data. See Fit Competing Risk Mixture.

Show Points

Shows or hides data points in the probability plot. The Life Distribution platform uses the midpoint estimates of the step function to construct probability plots. When you deselect Show Points, the midpoint estimates are replaced by Kaplan-Meier estimates.

Show Event Plot Frequency Label

(Appears only if you have specified a Freq variable.) Shows or hides the Frequency label in the Event Plot.

Show Survival Curve

Switches between the failure probability and the survival curve on the Compare Distributions probability plot and the Distribution Profiler plots.

Show Quantile Functions

Shows or hides a Quantile Profiler that overlays the plots for the selected distributions. The Quantile plot also shows points plotted at time values. The plot appears beneath the Compare Distributions report. If you select distributions in any of the Compare Distributions, Quantile Profiler, and Hazard Profiler plots, they appear in the other two plots.

Show Hazard Functions

Shows or hides a Hazard Profiler that overlays the plots for the selected distributions. The plot appears above the Statistics report. If you select distributions in any of the Compare Distributions, Quantile Profiler, and Hazard Profiler plots, they appear in the other two plots.

Show Statistics

Shows or hides the Statistics report. See Life Distribution: Statistics for details.

Tabbed Report

Shows graphs and data on individual tabs rather than in the default outline style.

Show Confidence Area

Shows or hides the shaded confidence regions in the plots.

Interval Type

Determines the type of confidence interval shown for the Nonparametric fit in the Compare Distributions plot. Select either pointwise or simultaneous confidence intervals.

Change Confidence Level

Enables you to change the confidence level for the entire platform. All plots and reports update accordingly.

Comparison Criterion

Enables you to select the criterion used to rank models in the Model Comparison report. For all three criteria, smaller values indicate better fit. Burnham and Anderson (2002) and Akaike (1974) discuss using AICc and BIC for model selection. For more details, see Likelihood, AICc, and BIC in the Fitting Linear Models book.

See Local Data Filter, Redo Menus, and Save Script Menus in the Using JMP book for more information about the following options:

Local Data Filter

Shows or hides the local data filter that enables you to filter the data used in a specific report.

Redo

Contains options that enable you to repeat or relaunch the analysis. In platforms that support the feature, the Automatic Recalc option immediately reflects the changes that you make to the data table in the corresponding report window.

Save Script

Contains options that enable you to save a script that reproduces the report to several destinations.

Save By-Group Script

Contains options that enable you to save a script that reproduces the platform report for all levels of a By variable to several destinations. Available only when a By variable is specified in the launch window.

If you have specified a By variable, separate Life Distribution reports appear for each level of the By variable.

Save By Group Results

For each By group, saves the estimates that appear in all Parametric Estimate reports for that group as a separate row in a new table.

Do Same Analyses for All Groups

Applies all of the selected options for the current group to all other By groups.