Predicting when a value will occur

eup310

New Member
Joined
Dec 18, 2008
Messages
8
I'm trying to predict as accurately as possible. on what day a certain value will be reached.
The example I will use is recording the mileage driven on a daily basis. There will be days when a vehicle is driven more and some days, it may not be driven at all. Assuming I collect the mileage every day for x number of days, is there a way I can predict (approximately) which day I will need to change the oil at 3000 miles?
I realize that over time, the prediction would be more accurate but is there a formula I can use to do this?
 

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Sulprobil

Board Regular
Joined
May 12, 2020
Messages
153
The FORECAST (or FORECAST. LINEAR) function in Excel predicts a future value along a linear trend. The FORECAST. ETS function in Excel predicts a future value using Exponential Triple Smoothing, which takes into account seasonality.
 

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