which term in the equation is used to represent the effect of the interaction can we skip lower order terms can we skip the lower order in interactions with a model? how do we skip lower order terms in a three-way interaction can we skip lower order terms in interactions? can we skip higher term in interaction can you skip a lower term in a three way interaction which term in regression equation is included in the lower order does the equation need upper and lower term to be included in the equation? how to skip lower order terms in interaction can we skip lower order terms in interactions? can we include lower term in regression equation how to skip the lower order dummies in regression can you skip upper and lower order terms how to skip lower order terms which term in an interaction is not included in the regression equation? what term can you skip can we skip lower order terms in interaction can we skip the lower order terms in interaction which term in the regression equation is the lower order term