求问SAS BASE 123题第92题。谢谢啦！

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92 The following SAS program is submitted:

proc report data = sasuser.houses nowd headline headskip;
    column style price;
    where price <100000;
    <insert code here>
    title;
run;

Exhibit: output from the REPORT procedure.
Style     Price
RANCH     $64,000
SPLIT     $65,850
CONDO     $80,050
RANCH     $86,650
SPLIT     $94,450
SPLIT     $73,650
CONDO     $79,350
TWOSTORY  $55,850
RANCH     $89,100
TWOSTORY  $69,250
RANCH     $34,500

Assuming that the PRICE variable is numeric, which one of the following completes the program and produces the output displayed in the exhibit?

A.
define style / group 'Style';
define price / mean 'Price' format = dollar9.;

B.
define style / display 'Style';
define price / across 'Price' format = dollar9.;

C.
define style / display 'Style';
define price / sum 'Price' format = dollar9.;

D.
define style / order 'Style';
define price / mean 'Price' format = dollar9.;


请问为啥是C呀？那个SUM是咋回事儿？谢谢！

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关键词：SAS base Base proc report following headline 统计 SAS SAS数据分析方法

look at the output column Style, there are multi RANCH and no order, so D and A are not correct answer. the output of Price is single, so no across.

so the right answer is C

Newkoarla 发表于 2017-4-19 18:34
look at the output column Style, there are multi RANCH and no order, so D and A are not correct answ ...

多谢指点