R-value

R-value or rvalue may refer to:

• In computer science, a value considered independently of its storage location
• [In computer science]Data value of a variable stored at some location in memory.
• R-value (insulation) in building engineering, the efficiency of insulation of a house
• R-value (soils) in geotechnical engineering, the stability of soils and aggregates for pavement construction
• R-factor (crystallography), a measure of the agreement between the crystallographic model and the diffraction data
• In statistics, the Pearson product-moment correlation coefficient, or simply correlation coefficient
• In ophthalmic optics, the distance between the segment optical center and the segment top
• In solid mechanics, the Lankford coefficient

See also

• R rating (disambiguation)
• L-value (disambiguation)