F-ratio or f-ratio may refer to:
- The F-ratio used in statistics, which relates the variances of independent samples; see F-distribution
- f-ratio (oceanography), which relates recycled and total primary production in the surface ocean
- f-number, f-ratio, or focal ratio, the ratio of the focal length of an optical system to the diameter of its entrance pupil
See also
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.