StatLab FAQ
Short answers to the questions people ask most about StatLab.
Is StatLab free?
Yes. StatLab is free to use in any modern browser, with or without an account.
Is my data uploaded?
No. Files you open are read and analysed inside your browser. Only if you sign in and choose “Save to my profile” is an encrypted copy of that project stored on our server.
How accurate are the results?
Every validated procedure is compared number-for-number with scipy and statsmodels on reference datasets to a relative tolerance of one in a million (433 reference test cases, 36,554 values checked against scipy/statsmodels/numpy, 0 failures). The full report is in the app under Help → Validation report.
Can StatLab open SPSS .sav files?
Yes — with variable labels, value labels, missing values and measure levels. Compressed .zsav files and saving back to .sav are planned.
Is StatLab the same as SPSS?
No. StatLab is an independent tool with its own design that covers the most-used procedures of SPSS Statistics Base; it is not affiliated with IBM. See the feature comparison for what is available and planned.
Why is my p-value shown as <.001?
Very small p-values are shown as “<.001”, following common practice; report them as p < .001.
Why are some cases missing from my analysis?
Cases with blank cells or user-missing codes are excluded, and a filter from Select cases may be on (shown in the status bar). Each table’s N tells you how many cases were used.
How do I get my tables into Word?
Press Copy above the table and paste into Word or Excel; it arrives as an editable table. For a whole report use Export HTML or Print / PDF.
I forgot my password. What now?
Password recovery is not available yet, so projects saved only in that profile cannot be recovered. Use File → Download project regularly as a backup.
Does StatLab work on a tablet?
Yes. It runs in Safari, Chrome and Edge on tablets and laptops; a keyboard makes data entry faster.