How to use the FORECAST function
Author: Oscar Cronquist Article last updated on October 16, 2018
The FORECAST function calculates a value based on existing x and y values using linear regression. Use this function to predict linear trends.
This function is outdated and was replaced with FORECAST.LINEAR function in Excel 2016.
Formula in cell E3:
=FORECAST(E6,C3:C9,B3:B9)
Excel Function Syntax
FORECAST(x, known_y's, known_x's)
Arguments
| x | Required. The data point for which you want to predict a value. |
| known_y's | Required. Known y points. |
| known_x's | Required. Known x points. |
Comments
The chart below shows the predicted value as a red dot, based on x and y values represented by the blue dots.
Functions in this article
Functions in 'Compatibility' category
The FORECAST function function is one of many functions in the 'Compatibility' category.
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Excel function categories
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UDF stands for User Defined Functions and is custom built functions anyone can create.
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