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ratio

ratio The ratio of two quantities expressed in terms of the same unit is the fraction that has the first quantity as numerator and the second as denominator. For example, if in a group of 100 people 5 die, the ratio of deaths to the total number in the group is 5/100=1/20=.05. Ratios are indicated also by writing the two values with a colon between them, e.g., the ratio of 4 to 8 can be expressed by 4:8 as well as by 4/8.

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ratio

A Dictionary of Earth Sciences | 1999 | | Â© A Dictionary of Earth Sciences 1999, originally published by Oxford University Press 1999. (Hide copyright information) Copyright

ratio In remote sensing, the digital number value of one band of a multispectral image divided by the digital number value of another band. The ratio allows analysis of relative differences between channels.

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AILSA ALLABY and MICHAEL ALLABY. "ratio." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 14 Nov. 2009 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "ratio." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (November 14, 2009). http://www.encyclopedia.com/doc/1O13-ratio.html

AILSA ALLABY and MICHAEL ALLABY. "ratio." A Dictionary of Earth Sciences. 1999. Retrieved November 14, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-ratio.html

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