F-test variance ratio
ClientF statistic from two sample variances and sizes.
F-test for two variances
Ratio of sample variances from two comma lists with a simple F statistic demo—assume approximate normality for classroom use. Processing runs in your browser—Toolcore does not need your paste for the core operation on this page.
Educational statistics only—confirm assumptions before production analysis.
How to use
Paste or type in the main field, then read the output below. Use Load example when available, or open the page with ?q= / ?qb= so tickets and agents share the same input.
Nearby workflows on Toolcore
- Sample variance (lite) — Unbiased sample variance s². Useful when the same table needs another statistic.
- Math expression evaluator — Evaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables. Useful when the same table needs another statistic.
- Welch t-test (lite) — Unequal-variance two-sample t demo. Useful when the same table needs another statistic.
- Standard deviation — Population standard deviation σ from pasted numbers. Useful when the same table needs another statistic.
Common use cases
- F-test variance ratio for quick local checks without uploading data.
- Copy results into tickets, docs, or classroom notes.
Common mistakes to avoid
Unexpected input shape
See the intro and how-to notes for accepted formats.
FAQ
Is processing local?
Yes—this runs entirely in your browser.
Agent prefill?
Use q or qb for the main text field when supported.
More tools
Related utilities you can open in another tab—mostly client-side.
Sample variance (lite)
ClientUnbiased sample variance s².
Math expression evaluator
ClientEvaluate basic + − × ÷ arithmetic with parentheses in your browser—no variables.
Welch t-test (lite)
ClientUnequal-variance two-sample t demo.
Standard deviation
ClientPopulation standard deviation σ from pasted numbers.