CONTACT

Contact

If a result differs from other software (Excel, R, SPSS…), you found a bug, or you need a feature, please email us.

When reporting an error, including the following helps us check quickly:

  • The calculator and the data (or summary values) you entered
  • The expected value and the tool you compared with (e.g. Excel STDEV.S, R t.test)
  • Your browser

If your data contains personal information, please remove or anonymize it first.

✉ ahngunism1105@gmail.com