evidence: Likelihood-Based Evidence

In likelihood.model: Likelihood-Based Statistical Inference in the Fisherian Tradition

Likelihood-Based Evidence

Description

Computes the strength of evidence for theta1 vs theta2: E(theta1, theta2) = logL(theta1) - logL(theta2)

Usage

evidence(model, ...)

## S3 method for class 'likelihood_model'
evidence(model, data, theta1, theta2, ...)

Arguments

model	The likelihood model
...	Additional arguments
data	Data frame for likelihood computation
theta1	First parameter value
theta2	Second parameter value

Details

Positive values favor theta1, negative values favor theta2.

Conventional interpretation (following Royall):

• |E| > log(8) ~ 2.08: Strong evidence

• |E| > log(32) ~ 3.47: Very strong evidence

Value

Evidence value (log likelihood ratio)

likelihood.model documentation built on March 19, 2026, 9:07 a.m.