VI_MODEL-cash-test: Test the null model against the alternative model

In TengMCing/visage: Visual Inference for Linear Regression Diagnostics

Test the null model against the alternative model

Description

This function test the null model against the alternative model. In this class, the test is a F-test computed using stats::anova. Derived classes may have their own test procedures.

Arguments

dat	Data frame. A data frame containing all variables needed by the null_formula and alt_formula.
null_formula	Formula. Formula for fitting the null model. Default is null_formula = self$null_formula.
alt_formula	Formula. Formula for fitting the alternative model. Default is alt_formula = self$alt_formula.

Value

A list containing the test name, the test statistic and the p-value.

Examples

# Instantiate
x <- rand_uniform()
e <- rand_normal()
test <- vi_model(prm = list(x = x, e = e),
                 prm_type = list(x = "r", e = "r"),
                 formula = y ~ 1 + x + x^2 + e,
                 null_formula = y ~ x,
                 alt_formula = y ~ x + I(x^2))


dat <- test$gen(100000)
test$test(dat)

test$test(dat, alt_formula = y ~ x + I(x^3))

TengMCing/visage documentation built on Aug. 28, 2024, 3:27 p.m.