auto regression models with time term is time trend auto-regressive what is the statistically valid model when to specify time term in ar how to specify a regressive auto regression in java a model that uses auto regression is _______ valid is the time trend valid what is the autoregressive term used for is an ar model valid is auto regression a model can ar model have time term what is the difference between an autoregressive model and a time term when is an regressive trend term included in an ar model is the following model regressively valid what model is a time term in why is a time trend model statistically valid what is the auto regressive trend model what is the difference between the time term in an autoregression model and the time term what model has a trend term what is the ar model and time trend