在卫生检验中,传统的校准方法是图解法和最小二乘法。图解法最简单,用目测即可作出判断,但因主观因素的影响,其准确度较差。最小二乘法克服了图解法的部分缺点,目前应用也最广泛,但该法对各误差平方项是等权的,而使最小二乘法仅适用于检测误差的方差恒定的情况。实际上,在分析响应值的不同检测范围 In the health inspection, the traditional calibration method is the graphic method and least square method. Graphic method is the simplest, with visual judgments can be made, but because of the subjective factors, its accuracy is poor. The least squares method overcomes some of the shortcomings of the graphic method, and is currently the most widely used, but the law is equal weight of the square of the error, while the least squares method is only applicable to the case of a constant variance of the detection error. In fact, different detection ranges for response values ​​are being analyzed