gRim (version 0.1.2)

ciTest_mvn: Test for conditional independence in the multivariate normal distribution

Description

Test for conditional independence in the multivariate normal distribution.

Usage

ciTest_mvn(x, set = NULL, statistic = "DEV", ...)

Arguments

x

A list with elements cov and n.obs (such as returned from calling cov.wt() on a dataframe. See examples below.)

set

statistic

...

Value

• An object of class 'citest' (which is a list).

Details

set can be 1) a vector or 2) a right-hand sided formula in which variables are separated by '+'. In either case, it is tested if the first two variables in the set are conditionally independent given the remaining variables in set. (Notice an abuse of the '+' operator in the right-hand sided formula: The order of the variables does matter.) If set is NULL then it is tested whether the first two variables are conditionally independent given the remaining variables. x must be a list with components cov and n.obs such as returned by calling cov.wt( , method='ML') on a dataframe.

See Also

ciTest ciTest.table ciTest_table ciTest.data.frame ciTest_df chisq.test

Examples

data(carcass)
ciTest(cov.wt(carcass, method='ML'), set=~Fat11+Meat11+Fat12)
ciTest_mvn(cov.wt(carcass, method='ML'), set=~Fat11+Meat11+Fat12)