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在分析建筑物变形观测的成果中,查明变形与发生变形原因之间的数量关系有特殊的意义,为此,需要进行相关分析。判断相关的类型可在图上进行,一个轴表示形变量,另一个轴表示引起变形的各种因素的变化值,如果在图上,这些点子在一条直线附近,这就是工程中常用的线性相关。这时偶然量x、y 之间的相关程度用相关系数ρ确定,它的经验数值 r 用下式计算:r=(μ_(xy))/(σ_xσ_y) (1)式中μ_(xy)——经验相关矩,或叫经验协方差,μ_(xy)=1/n sum from i=1 to n(x_i—(?))(y_i—(?)) (2)用台式电子计算机时,用下式计算较为简便。r=
In analyzing the results of building deformation observations, it is of special significance to find out the quantitative relationship between the deformation and the causes of deformation. For this reason, correlation analysis is needed. Judging the relevant types can be performed on the graph. One axis represents the deformation and the other axis represents the variation of the various factors that cause the deformation. If on the map, these are near a straight line, this is the linear correlation commonly used in engineering. . At this time, the degree of correlation between the accidental quantities x, y is determined by the correlation coefficient ρ, and its empirical value r is calculated by the following equation: r = (μ_(xy))/(σ_xσ_y) (1) where μ_(xy)— - empirical correlation moment, or empirical covariance, μ_(xy) = 1/n sum from i = 1 to n(x_i_(?))(y_i_(?)) (2) When using a desktop computer, use The following formula is relatively simple to calculate. r=