ACI 214R-11

Statistical procedures provide valuable tools for evaluating the results ofconcrete strength tests. Information derived from such procedures is valuablein defining design criteria, specifications, and other parameters needed forstructural evaluation and repair. This guide discusses variations that occurin concrete strength and presents statistical procedures useful in interpretingthese variations with respect to specified testing and criteria.Keywords: coefficient of variation; concrete strength; normal distribution;required overdesign; quality control; standard deviation; statistical methods

This product replaces:ACI 214R-02 - Evaluation of Strength Test Results of Concrete