如果数据的缺失完全是随机的，丢弃不完整的回答虽然会减少估计的精度但是不会产生偏离。
If the data deficiency is totally random, then only the precision will be reduced while deviation will not be caused.
然而随着收视率的增加，节目越来越偏离相亲的初衷，出现了许多道德缺失现象。
However, as the ratings increase, program is more and more from each original, appeared a lot of moral deficiency.
应用推荐