when does cumulative trend peak? in java how to find life cost trend which is a problem with a cumulative variable in.net? when does life-date-cost trend downward what is cumulative cost? what kind of model for life cycle costs what does it mean when the life time cost curve is trending upwards in a car? is life year cost a dependant variable what is the most recent life-date cost what is the cumulative life-time cost for an individual vehicle why is life of a vehicle a cumulative variable what does a a cumulative curve look like? can the.net model be biased negative defining a cumulative variable which polynomial fit function is best how to use polynomial least squares fit .net what is the cumulative life time of a vehicle when does life to date cost peak how to do a cumulative curve which method should i use instead of the linear best fit?