1) weighted arithmetic average
加权算术平均数
3) weight and arithmetic average methods
加权算术平均法
1.
The text uses the weight and arithmetic average methods to depict the water quality pollution of the Yangtze River in the about two years,and find the the water quality pollution condition of every areas and non-linear regression to find the approximately distributing of the main infectant to time or space.
文中运用加权算术平均法对长江近两年多的水质污染情况进行了定量的刻画得到各地区水质的污染状况。
补充资料:加权算术平均数
加权算术平均数是将各组标志值乘以相应的各组单位数或权数求出各组标志总量,然后将其加总求得总体标志总量,同时把各组单位数或对数相加求出总体单位总量,最后用总体标志量除以总体单位总量。在计算算术平均数时,如果资料已经分组,则不能简单地将各组标志值相加作为总体总量,而应用此法计算其平均数。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条