For formulas to show results, select them, press F2, and then press Enter. If you need to, you can adjust the column widths to see all the data. Example 3 - Multiple Linear Regression Copy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. The equation for FORECAST and FORECAST.LINEAR is a+bx, where:Īnd where x and y are the sample means AVERAGE(known_x's) and AVERAGE(known y's).Ĭopy the example data in the following table, and paste it in cell A1 of a new Excel worksheet. If the variance of known_x's equals zero, then FORECAST and FORECAST.LINEAR return the #DIV/0! error value. linear regression analysis,single variable polynomial regression,etc. The Excel Solver will find the equation of the linear or nonlinear curve which most closely fits a set of data points. Its curve-fitting capabilities make it an excellent tool to perform nonlinear regression. If known_y's or known_x's is empty or one has more data points than the other, FORECAST and FORECAST.LINEAR return the #N/A error value. Excel-based gradual regression analysis method and VBA procedure are given and it has. Excel Solver is one of the best and easiest curve-fitting devices in the world, if you know how to use it. If x is nonnumeric, FORECAST and FORECAST.LINEAR return the #VALUE! error value. The data point for which you want to predict a value. The FORECAST/FORECAST.LINEAR function syntax has the following arguments: You can use these functions to predict future sales, inventory requirements, or consumer trends. The existing values are known x-values and y-values, and the future value is predicted by using linear regression. The future value is a y-value for a given x-value. DescriptionĬalculate, or predict, a future value by using existing values. It's still available for backward compatibility, but consider using the new FORECAST.LINEAR function instead. The syntax and usage of the two functions are the same, but the older FORECAST function will eventually be deprecated. Note: In Excel 2016, the FORECAST function was replaced with FORECAST.LINEAR as part of the new Forecasting functions.

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