If there appears to be a linear relationship test results should be established by appropriate statistical methods (e. g. by calculation of a regression line by the method of leastsquares).
如果其呈现线性关系，测试结果应该通过适当的统计学方法(例如，以最小二乘方来计算回归线)来确立。
2
The comparison among various methodsof parameter estimation shows that the least-squares fitting method in the time domain is more accurate one.
各种参数估值方法的比较表明，时间域最小二乘拟合法较为精确。
3
Trust region method is a kind of efficient methods to solve the general unconstrained optimization and its special situation, the nonlinear leastsquares problems.