mvt_test | R Documentation |
First step to performs a Bayesian multivariate one sample Student t test using the
(adjusted) fractional Bayes factor using the BF()
function.
mvt_test(X, Y, null = NULL, paired = FALSE, ...)
X |
a data matrix with the variables in the columns. |
Y |
an optional data matrix with the variables in the columns. |
null |
a vector of the null values of the variables. |
paired |
a logical indicating whether you want a multivariate paired t-test. |
... |
further arguments to be passed to or from methods. |
X
must be a data matrix and null
must be a vector of the assumed null values of the variables.
An object that can be applied to the BF()
.
Mulder, J. and Gu, X. (2023). Bayesian Testing of Scientific Expectations under Multivariate Normal Linear Models. Multivariate Behavioral Research, 57, 767-783. DOI: 10.1080/00273171.2021.1904809.
mvt_fmri <- mvt_test(fmri[,1:2],null = c(0,0))
BF(mvt_fmri)
# the same test can be executed via the lm() function
intercept <- rep(1,nrow(fmri))
lm1 <- lm(cbind(Face,Vehicle) ~ -1 + intercept, data=fmri)
BF(lm1,hypothesis="intercept_on_Face=intercept_on_Vehicle=0")
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