在实际工作中，往往会不断得到新样品数据，可利用递推公式不断地把新信息加入到经验回归方程中去，以构成一个动态的预测系统。
In practical work, new sample data is often obtained continually, so these new data can be joined the empirical equation of regression by using recursive formula, and form a dynamic forecast system.
用实验方法确定经验公式时，回归方程中用最小二乘方法求得的待估参数的估计值往往是一个很长的数。
When determining empirical formula with test method, estimation value of estimated parameter in regression equation which is obtained with least square method always is a long number.
用实验方法确定经验公式时，回归方程中用最小二乘方法求得的待估参数的估计值往往是一个很长的数。
When determining empirical formula with test method, estimation value of estimated parameter in regression equation which is obtained with least square method always is a long number.
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