The default value of 1 indicates seasonality is detected automatically.Ģ. The fourth argument indicates the length of the seasonal pattern. The FORECAST.ETS function below predicts a future value using Exponential Triple Smoothing. The FORECAST.ETS function in Excel 2016 or later is a great function which can detect a seasonal pattern.ġ. This equation predicts the same future values. Note: when you add a trendline to an Excel chart, Excel can display the equation in a chart.
Enter the value 89 into cell C11, select the range A1:C14 and insert a scatter plot with straight lines and markers. Explanation: when we drag the FORECAST.LINEAR function down, the absolute references ($B$2:$B$11 and $A$2:$A$11) stay the same, while the relative reference (A12) changes to A13 and A14.Ģ.