what is the range of standard deviation for an asset deficiency how to improve sampling of assets what is the standard error of sampling unit for deficiency what is standard error of sampling units used to estimate asset deficiency why a sampling sampling should have a low standard error what is the sampling unit requirement for rare variable when to use a proportion estimator how to improve sample design how to estimate the percent of inventory deficiency what is the standard error for asset deficiency which sampling unit does deficiency occur? what is the standard deviation for a sampling unit what is the sampling unit used for asset deficiency rates what is the standard error for asset deficiency how is asset deficiency rate estimated how are asset deficiency rate calculated and how can they be improved? why is the standard error of a random sampling unit higher than that of a normal sampling unit how to estimate asset deficiency ratio how to use a sampling unit to estimate asset deficiency what is the average standard error of an asset