does this model make any sense? do model models make any sense does this model make any sense? do you think it makes sense does arima make any sense is arima a model what model is used to measure daily activity what model of activity makes the best use of data does arima model make any sense what is the model of activity per day? does this model make any sense? does activity per day make sense does this model make any sense how does a model of activity per day make sense? do the model fit data in the same way as activity data? how does the arima model work does this model make any sense what is my arima does arima make any sense which model of data makes the best sense? what makes sense?