has part
has_specified_input
has_specified_output
achieves_planned_objective
p-value
statistical model
linear regression for analysis of continuous dependent variable
homoskedasticity test
equal variance testing objective
Breusch-Pagan test
Alejandra Gonzalez-Beltran
Breusch, T. S. and Pagan, A. R. (1979) A simple test for heteroscedasticity and random coefficient variation. Econometrica 47, 1287--1294.
and adapted from:
http://www.inside-r.org/packages/cran/car/docs/ncvTest
last accessed [2014-03-15]
Breusch-Pagan test is a statistical test which computes a score test of the hypothesis of constant error variance against the alternative that the error variance changes with the level of the response (fitted values), or with a linear combination of predictors.
Orlaith Burke
Philippe Rocca-Serra
http://hosho.ees.hokudai.ac.jp/~kubo/Rdoc/library/lmtest/html/bptest.html
bptest(formula, varformula = NULL, studentize = TRUE, data = list())
or
http://www.inside-r.org/packages/cran/car/docs/ncvTest
ready for release