R-VALUE

R-value can refer to:Properties of materials:R-value (insulation), the efficiency of insulationR-value (soils), stability of soils and aggregates for pavement constructionr-value, usually uncapitalized, is also term used in computer science. See 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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