SAS Base 认证考试—70 题SAS 分多种认证种类:base,advanced,clinic 等,但大多需要先通过 base 认证。但凡此类商业组织提供的考证,基本都是题库型,因此想考过难度并不大。对于只想拿 SAS 认证的人,假如纯熟掌握网上流传甚广的 sas 真题 70 题,通过 base 认证基本就没问题。Q 11. The following SAS program is submitted:data WORK.TOTAL;set WORK。SALARY;by Department Gender;if First.<_insert_code_〉 then Payroll=0; Payroll+Wagerate;if Last。<_insert_code_>;run;The SAS data set WORK.SALARY is currently ordered by Gender within Department。Which inserted code will accumulate subtotals for each Gender within Department?A. GenderB. DepartmentC. Gender DepartmentD。 Department Gender答案:A本题知识点:自动变量在 SAS 读取数据时,在 PDV 过程中会产生诸多自动变量,在输出的数据集中是不可见的.· FIRST.VARIABLE:同一种 BY 变量(组),若新的变量值第一次出现时,其 first。variable 值为 1。· LAST。VARIABLE:同一种 BY 变量(组),若新的变量值最终一次出现时,其 last。variable 值为 1。此外,在 BY 变量右面有多种变量时,先按第一种变量排序,若第一种变量的观测存在反复时,才按第二个变量排序。Q 2Given the following raw data records in TEXTFILE。TXT: ——-—|-———10—-—|-—--20-—-|——--30 John,FEB,13,25,14,27,Final John,MAR,26,17,29,11,23,Current Tina,FEB,15,18,12,13,Final Tina,MAR,29,14,19,27,20,CurrentThe following output is desired:Obs Name Month Status Week1 Week2 Week3 Week4 Week5 1 John FEB Final $13 $25 $14 $27 。 2 John MAR Current $26 $17 $29 $11 $23 3 Tina FEB Final $15 $18 $12 $13 。 4 Tina MAR Current $29 $14 $19 $27 $20Which SAS program correctly produces the desired output?A. data WORK.NUMBERS;length Name $ 4 Month $ 3 Status $ 7;infile 'TEXTFILE.TXT' dsd;input Name $ Month $;if Month='FEB' then input Week1 Week2 Week3 Week4 Status $;else if Month=’MAR’ then input Week1 Week2 Week3...