R-value
From Wikipedia, the free encyclopedia
R-value can refer to:
- Properties of materials:
- R-value (insulation), the efficiency of insulation
- R-value (soils), stability of soils and aggregates for pavement construction
- r-value, usually uncapitalized, is also term used in Computer science. See the article on Value (computer science).
- In crystallography, the R-factor (also known as R-value), is a measure of the agreement between the crystallographic model and the diffraction data.
- In statistics, r refers to the Pearson product-moment correlation coefficient, often called simply correlation coefficient.
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