AS 2891.14.15:2018 PDF
This Standard sets out the method for calculating the mean, the unbiased standard deviation, coefficient of variation and characteristic values of a set of test results.
These values are most commonly specified for density ratio and per cent air voids determined in accordance with AS/NZS 2891.14.5 but may also be applied to other test results for asphalt, other construction materials and processes.
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