This FAQ covers 3 common questions about using the ZTEST function in WPS Spreadsheet on Windows, including errors, result checking, and formula fill workflows.
FAQ
What should I do if ZTEST returns an error value?
- Check whether the referenced cells contain numeric values.
- Remove extra spaces or text content that may cause data type mismatches.
- Review the parameter order and confirm the formula again.
Why does the ZTEST result look different from what I expected?
- Check whether the referenced range is correct and complete.
- Make sure the related cells are formatted as numbers instead of text.
- Review the formula step by step and confirm that the test value and standard deviation settings are appropriate.
How can I use ZTEST in multiple cells at once?
- Enter the full formula in the first target cell.
- Drag the fill handle down or across to copy the formula.
- Use $ to lock cell references when certain references need to stay fixed.
Glossary
| Term | Definition |
|---|---|
| ZTEST | A statistical function that returns the one-tailed P-value of a z-test. |
| One-tailed P-value | A statistical result that indicates the probability of observing a sample outcome under the specified test condition. |
| Cell reference | A cell or range used in a formula to provide data, a test value, or another input. |