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标题: 请教base123 考题,多谢~ [打印本页]

作者: shiyiming    时间: 2009-7-24 15:22
标题: 请教base123 考题,多谢~
想请问一下123题里的第13题和14题

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"
ranch,1500,3,3,kemble avenue,"$86,650"
split,1615,4,3,west drive,"$94,450"
split,1305,3,1.5,graham avenue,"$73,650"
The following sas program is submitted using the raw data file as input:
data work.condo_ranch;
infile 'file-spicification' dsd;
input style $ @;
if style='condo' or style='ranch' then
input sqfeet bedrooms baths street $ price : dollar10.;
run;
How many observations does the work.condo_ranch data set contain?
A.0 B.3 C.5 D.7

How many observations will the output data set contain?
A.0 B.3 C.5 D.7

这俩题的解题思路是什么呢?为什么work.condo_ranch data set的结果是7而output data set的结果是3呢?我运行了一下这两个结果不都是7么?这有何区别呢?有明白的人可以讲讲么,谢谢~
作者: Qiong    时间: 2009-7-27 11:35
标题: Re: 请教base123 考题,多谢~
你仔细看,第二题里面的if后面没有then的。
作者: shiyiming    时间: 2009-7-28 07:22
标题: Re: 请教base123 考题,多谢~
能否劳驾发一份BASE 123 考题给我, 不胜感激!
           <!-- e --><a href="mailto:daliyang@hotmail.com">daliyang@hotmail.com</a><!-- e -->
作者: shiyiming    时间: 2009-7-28 09:49
标题: Re: 请教base123 考题,多谢~
果然是,太不仔细了,谢谢
作者: shiyiming    时间: 2009-9-25 09:09
标题: Re: 请教base123 考题,多谢~
搭车求 123 材料,leamingliu@gmail.com




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