How it works
Treat each nonnegative integer frequency as a count of repeated observations. Compute the count-weighted mean and squared deviations; divide by N for population variance or N−1 for sample variance.
Input definitions
- CSV: value,frequency
- Plain text; maximum 200,000 characters.
A worked example
- CSV: value,frequency
- value,frequency 10,2 20,3
Assumptions & limits
Entered-data numeric worksheet. Floating-point calculations are rounded for display. Statistical results describe the entered sample and depend on the stated model assumptions.
Sources & review
Maintained by AnsRio. Methods and examples use automated checks; this does not imply independent professional certification.
Method updated 2026-10-17. Content checked against the stated method and examples. Our verification approach.
Common questions
Can I use survey or reliability weights as frequencies?
No. Frequencies count repeated observations and must be whole numbers. Analytical, reliability and survey weights use different variance formulas.
How does Frequency-table mean and variance work?
Treat each nonnegative integer frequency as a count of repeated observations. Compute the count-weighted mean and squared deviations; divide by N for population variance or N−1 for sample variance.
What are the limits of Frequency-table mean and variance?
Entered-data numeric worksheet. Floating-point calculations are rounded for display. Statistical results describe the entered sample and depend on the stated model assumptions.