R-value: Difference between revisions

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addition of r value in ophthalmic optics
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*[[R-factor (crystallography)]], a measure of the agreement between the crystallographic model and the diffraction data
*[[R-factor (crystallography)]], a measure of the agreement between the crystallographic model and the diffraction data
*In statistics, ''r'' (or r value) refers to the [[Pearson product-moment correlation coefficient]], often called simply ''correlation coefficient''
*In statistics, ''r'' (or r value) refers to the [[Pearson product-moment correlation coefficient]], often called simply ''correlation coefficient''
*In ophthalmic optics, r-value refers to the distance between the segment optical center and the segment top


== See also ==
== See also ==

Revision as of 03:48, 8 November 2011

R-value can refer to:

  • Properties of materials:
  • r-value, in computer science, a value that does not have an address in a computer language
  • R-factor (crystallography), a measure of the agreement between the crystallographic model and the diffraction data
  • In statistics, r (or r value) refers to the Pearson product-moment correlation coefficient, often called simply correlation coefficient
  • In ophthalmic optics, r-value refers to the distance between the segment optical center and the segment top

See also