请教一道SAS BASE题: if then 和if的区别?
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13. A raw data file is listed below:
RANCH,1250,2,1,Sheppard Avenue,"$64,000"
SPLIT,1190,1,1,Rand Street,"$65,850"
CONDO,1400,2,1.5,Market Street,"80,050"
TWOSTORY,1810,4,3,Garris Street,"$107,250 ...
2016-7-12 00:01 - 水色青空 - SAS专版