In fact, there is a certain relationship between production and cost in the process of enterprise production and operation, but because there are many factors affecting cost and output, the relationship between them is more concave convex curve. A simple assumption that there is a linear relationship between cost and output can simplify the model, but the analysis results will certainly have some limitations. Therefore, it can be considered that it is impossible to distinguish cost behavior analysis at one time. In addition, in the practical application of cost behavior analysis, there will be some "accidental error" problems, for example: in view of the difficulty in distinguishing fixed costs and variable costs, and due to the laxity and omission of individuals or groups, there are errors in the division of components, which leads to distortion of results and greatly reduces the efficiency of management. In addition, due to the difficulty of obtaining the original information, it is difficult to collect a lot of information completely and truly, which will also have a negative impact on the division of cost performance<br>
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