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用回归分析进行病虫害测报的人越来越多,有些问题值得商榷。一个直线回归方程(?)=a+bx建立后,有的同志常常通过以下方法检验它的“测报准确率”: 1.用下式求对应于自变数X_i的估计标准误:
There are more and more people who use the regression analysis to detect the pests and diseases. Some questions are worth discussing. After a linear regression equation (?) = A + bx is established, some comrades often test its “accuracy of measurement” by the following method: 1. Calculate the standard error of estimation corresponding to the independent variable X_i using the following formula: