kk22boy 发表于 2012-3-31 23:09 
或者你把数据发出来,我们看看
Another way to lessen the in
uence of individual points is to simply remove them. From
the original, untransformed data, which two points seem the most likely candidates for
removal? Fit a regression to the original dataset with these two points removed. Again,
plot the data and superimpose the regression line. Also, create a residual plot and a
leverage barplot and compare it to the other two sets of plots you have already drawn.
我今天用identify手动把两个outliers标出来了,第96和98,但是不知道对不对啊,什么方法更精确呢