In the end, the average, variance and quantiles of profit margin of drugstores are obtained from survey data.
最后根据调查数据，利用随机和模型给出了药店毛利百分数的均值、方差以及分位点。
2
We may measure the performance of the profit center or its manager by means of the controllable income variance that is the difference between the actual and planned number of the controllable income.