This FAQ covers 3 common question types about the FORECAST function in WPS, including parameter errors, unexpected results, and batch use across cells.
FAQ
What should I do if FORECAST returns an error value?
- Check whether the parameters used in the calculation are valid numeric values.
- Confirm that the referenced ranges do not contain extra spaces, text, or mismatched data.
- Review the parameter order again and make sure the separators in the formula are correct.
Why is the FORECAST result different from what I expected?
- Check whether the known x-value range and known y-value range correspond to each other correctly.
- Confirm that the referenced rows and columns were selected correctly.
- Review the function parameter details and calculate again after correcting the input.
How can I use FORECAST in multiple cells at once?
- Enter and confirm the formula in the first target cell.
- Select that cell and move the pointer to the fill handle in the lower-right corner.
- Drag downward or sideways to copy the formula to other cells, and check whether any references should be fixed.
Glossary
| Term | Definition |
|---|---|
| FORECAST | A spreadsheet function that performs linear prediction from known data. |
| Linear regression | A method used to estimate a target value from the relationship in existing data, often used for trend prediction. |
| Parameter | An input value required by a function, such as the target x-value or the known data ranges. |