google-sheetsforecastinglinear-interpolation
Forecast on a date-based dataset in Google Spreadsheet
I'm trying to perform a forecast of body weight values based on data acquired periodically. Here is the dataset specification:
DATE (X-Axis)
01/01/2015
01/02/2015
01/03/2015
01/04/2015
BODY WEIGHT (Y-Axis)
90.3
89.8
87.3
88.6
I would like to be able to forecast the weight value at a specific date in the future (let's say 01/01/2016) with the forecast value becoming more precise while I keep on feeding the dataset with additional values over the time.
How can I achieve this in Google Spreadsheet?
Solution
The common FORECAST function should be able to do this.
=forecast(C2, A$8:A$11, A$2:A$5)
The documentation link provided is Excel based but the syntax is identical. I cannot unequivocally state the same for the algorithm.
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