The cause is that the unit weight estimation variance and the generality variance of the distribution don't equal with each other.
2
三角洲量单位权方差的先验估值一般用经典菲列罗公式计算。
A prior estimate of unit weight variance is usually calculated by the classicalFerrelo's formula.
3
本文运用数理统计学原理分析了南通市一级导线网(B区)单位权中误差偏大的原因;
This paper analysis the reason why the middle error of unit weight in first class traverse of Nan Tong City (B area) is bigger with the principle of mathematic statistics;