AS 2891.14.15:2018 PDF Download

The AS 2891.14.15:2018 standard provides guidelines for determining the mean, standard deviation, coefficient of variation, and characteristic values for a given set of test results in asphalt sampling and testing. These calculations are essential in assessing the variability and reliability of the test results.

The standard ensures that the mean, or average, of the test results is calculated accurately using a specified formula. It also specifies the method for calculating the unbiased standard deviation, which measures the spread of the test results around the mean. The coefficient of variation, which expresses the relative variability of the test results, is also determined through a prescribed calculation.

Moreover, the AS 2891.14.15:2018 standard defines how to determine the characteristic values of the test results. Characteristic values represent certain percentile levels of the distribution of the test results and are used to establish minimum requirements or assess compliance with specifications.