Calculates, or predicts, a future value by using existing values. The predicted value is a y-value for a given x-value. The known values are existing x-values and y-values, and the new value is predicted by using linear regression. You can use this function to predict future sales, inventory requirements, or consumer trends.
FORECAST.LINEAR(x, known_y's, known_x's)
The FORECAST.LINEAR function syntax has the following arguments:
X Required. The data point for which you want to predict a value.
Known_y's Required. The dependent array or range of data.
Known_x's Required. The independent array or range of data.