关键词: 最小二乘原理, 裂区设计, 二次回归分析, 显著性检验

Abstract: Based on the principle of least squares, this paper deals with the application of the quadratic regression analysis method to the analysis of the data of split-plot design with two experimental factors. The quadratic regression equation of the experimental target with two factors and the test of significance are given. This approach indicates a new way to analyze the results of factor experiment. Owing to gain more useful information. this approach is by far more efficient in comparison with the analysis of an ordinary split-plot design. A numerical illustration is also given.

Key words: LEAST SQUARES PRINCIPLE, SPLIT-PLOT DESICN, QUADRATIC REPRESSION ANALYSIS, SIGNIFICANCE TEST