F-ratio (disambiguation)

F-ratio or f-ratio may refer to:

f-number, f-ratio, or focal ratio, the ratio of the focal length of an optical system to the diameter of its entrance pupil
f-ratio, in oceanography, which relates recycled and total primary production in the surface ocean
The F-ratio used in statistics, which relates the variances of independent samples; see F-distribution

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.