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BASE机经变形题总结

BASE机经变形题总结
BASE机经变形题总结

(109) QUESTION

109

The contents of the raw data file EMPLOYEE are listed below:

----|----10---|----20---|----30

Ruth 39 11

Jose 32 22

Sue 30 33

John 40 44

The following SAS program is submitted:

data test;

in file' employee';

input employee_ name $ 1-4;

if employee_ name = 'Sue' then input age 7-8;

else input idnum 10-11;

run;

Which one of the following values does the variable AGE contain when the name of the employee is "Sue"?

A. 30

B. 33

C. 40

D. . (missing numeric value)

QUESTION

110

The contents of the raw data file EMPLOYEE are listed below:

----|----10---|----20---|----30

Ruth 39 11

Jose 32 22

Sue 30 33

John 40 44

The following SAS program is submitted:

data test;

in file' employee';

input employee_ name $ 1-4;

if employee_ name = 'Ruthh' then input idnum 10-11;

else input age 7-8;

run

Which one of the following values does the variable IDNUM contain when the name of the employee is "Ruth"?

A. 11

C. 32

D. . (missing numeric value)

Answer: B

机经:

正如各位前辈所言,70以及变形一定要看。今天考到的有:

4,13,16,17,20,21(gt 50),22,24,30,31,32,34,35(output变为else output),40(do while (prod le 6)改为(do until(prod gt 6))),42(变为填空,US放在了最前面),46,47,51,53,56,57,60,61,63,65,66(在第一个end后面加了output,求X值),67(if X<10 then X=1改为X=3),69,70(题目改为根据log内容,判断错误内容)

70题的变型全部考到,全新题在7-8题

1)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. Gender _insert_code_ _insert_code_

B. Department

C. Gender Department

D. Department

Gender

Answer: A

statement

describes

a

characteristic

of

the

SAS

automatic

variable

_ERROR_?

A. The _ERROR_ variable maintains a count of the

number of data errors in a DATA

step.

B. The _ERROR_ variable is added to the

program data vector and

becomes part of

the data set being created.

C. The _ERROR_ variable can be only used in expressions in the DATA step.

D.

The

_ERROR_

variable

contains

the

number

of

the

observation

that

caused

the

data error

.

Answer: C

9)The following SAS program is submitted:

value score 1 - 50 = 'Fail'

51 - 100 = 'Pass';

run;

proc report data = work.courses nowd;

column exam;

define exam / display format = score.;

run;

The variable EXAM has a value of 50.5.

How will the EXAM variable value be displayed in the REPORT procedure

output?

A. Fail

B. Pass

C. 50.5

D. . (missing numeric value)

答案:C

19) TheSAS data set WORK.ONE contains a numeric variable named Num and a character variable named Char:

WORK.ONE

Num Char

--- ----

1 23

3 23

1 77

The following SAS program is submitted:

proc print data=WORK.ONE;

where Num='1'; Num=contain(1); 没contain这个函数

run;

What is output?

A.

Num Char

--- ----

1 23

B.

Num Char

--- ----

1 23

1 77

C.

Num Char

--- ----

1 23

3 23

1 77

D. No output

is generated.

Answer: D (num+char, where statment can not work)

21)Given the SAS data set WORK.PRODUCTS:

ProdId

Price ProductType

Sales Returns

------ ----- ----------- ----- -------

K12S 95.50 OUTDOOR 15 2

B132S 2.99 CLOTHING 300 10

R18KY2 51.99 EQUIPMENT 25 5

3KL8BY 6.39 OUTDOOR 125 15

DY65DW 5.60 OUTDOOR 45 5

DGTY23 34.55 EQUIPMENT 67 2

The following SAS program is submitted:

data WORK.OUTDOOR WORK.CLOTH WORK.EQUIP;

set WORK.PRODUCTS;

if Sales GT 50;

if ProductType

EQ 'OUTDOOR' then output

WORK.OUTDOOR;

else if ProductType

EQ 'CLOTHING' then output

WORK.CLOTH;

else if ProductType

EQ 'EQUIPMENT' then output

WORK.EQUIP;

run;

How many observations does the WORK.OUTDOOR data set contain?

A. 1

B. 2

C. 3

D. 6

Answer: B

27.Given the SAS data set WORK.TEMPS:

Day Month

Temp

--- ----- ----

1 May 75

15 May 70

15 June 80

3 June 76

2 July 85

14 July 89

The following program is submitted:

proc sort data=WORK.TEMPS;

by descending Month Day by day descending Month; run;

proc print data=WORK.TEMPS;

run;

Which output

Is correct?

33)The following SAS program is submitted:

data WORK.TEST;

set WORK.PILOTS;

if Jobcode='Pilot2' then Description='Senior Pilot'; else Description='Unknown';

run;

The

value

for

the

variable

Jobcode

is:

PILOT2.What

is

the

value

of

the

variable

Description?

A. PILOT2

B. Unknown

C. Senior Pilot

D. ' ' (missing character value)

Answer: B

35)

x y

5 2

1 3

5 6

题目改成了,

if x=5 then output one;

if y lt 5 then output two;

else output other;

How many observations in each dataset?答案是2 for one, 2 for two, 1 for other. 35)given the SAS data set SASDATA.TWO: X Y

-- --

5 2

3 1

5 6

The following SAS program is submitted: data SASUSER.ONE SASUSER.TWO OTHER; set SASDATA.TWO;

if X eq 5 then output

SASUSER.ONE;

if Y lt 5 then output

SASUSER.TWO;

else output;

run;

What is the result?

A.

data set SASUSER.ONE has 5 observations

data set SASUSER.TWO has 5 observations data set WORK.OTHER has 3 observations

B.

data set SASUSER.ONE has 2 observations

data set SASUSER.TWO has 2 observations data set WORK.OTHER has 1 observations

C.

data set SASUSER.ONE has 2 observations

data set SASUSER.TWO has 2 observations

data set WORK.OTHER has 5 observations

D. No data sets are output.

The DATA step fails execution due to syntax errors. Answer: A

36)Given the contents of the raw data file 'EMPLOYEE.TXT':

----+----10---+----20---+----30--

Xing 19 2 2004 ACCT

Bob 5 22 2004 MKTG

Jorge 3 14 2004 EDUC

The following SAS program is submitted:

data WORK.EMPLOYEE;

infile 'EMPLOYEE.TXT';

input

@1 FirstName $

@15 StartDate

@25 Department

$;

run;

Which SAS informat correctly completes the program?

A. date9.

B. mmddyy10.

C. ddmmyy10.

D. mondayyr10.

Answer: B

42)The following SAS program is submitted:

data WORK.ONE;

Text='US-Austrilia Denmark';

Pos=find(Text,'US','i',5);

run;

What value will SAS assign to Pos?

A. 0

B. 1

C. 2

D. 12

Answer: D

填空题,给出find(‘US-Austrilia....', 'US', 'i', 5) 的具体数值,答案是填5 (在8字符里面)44)The following SAS program is submitted:

data ONE TWO SASUSER.TWO;

set SASUSER.ONE;

run;

Assuming

that

SASUSER.ONE

exists,

how

many

temporary

and

permanent

SAS

data

sets are created?

A. 2 temporary

and 1 permanent

SAS data sets are created

B. 3 temporary

and 2 permanent

SAS data sets are created

C. 2 temporary

and 2 permanent

SAS data sets are created

D. there is an error

and no new data sets are created

Answer: D

46) Given the SAS data set WORK.ONE:

Obs Revenue2007Revenue2008 Revenue2009 Revenue2010

--- ----------- ----------- -----------

1 1.

2 1.6 2.0

The following SAS program is submitted:

data WORK.TWO;

set WORK.ONE;

Total=mean(of Rev:);

run;

What value will SAS assign to Total?

A. 3

B. 1.6

C. 4.8

D. The program fails to execute due to errors. Revenue2007 对应的值为 . 计算 . 1.2 1.6 2.0的平均值

选项变成了A. . B. 1.0 C.1.6 D.The program fails to execute due to errors.

Answer: B

52.Given the SAS data set WORK.EMP_NAME:

Name EmpID

---- -----

Jill 1864

Jack 2121

Joan 4698

John 5463

Given the SAS data set WORK.EMP_DEPT:

EmpID Department

----- ----------

2121 Accounting

3567 Finance

4698 Marketing

xxxxxxxxxxxxxxx

5463 Accounting

The following program is submitted:

data WORK.ALL;

merge WORK.EMP_NAME(in=Emp_N)

WORK.EMP_DEPT(in=Emp_D);

by Empid;

if (Emp_N and not Emp_D) or (Emp_D and not Emp_N);

run;

How many observations are in data set WORK.ALL after submitting the program?

A. 1

B. 2

C. 3

D. 5

52)Given the SAS data set WORK.EMP_NAME:

Name EmpID

---- -----

Jill 1864

Jack 2121

Joan 4698

John 5463 注意它变了!Emp_N里面有两个不在Emp_D里,所以最后选3.

Given the SAS data set WORK.EMP_DEPT:

EmpID Department

----- ----------

2121 Accounting

3567 Finance

4698 Marketing

5463 Accounting

The following program is submitted:

data WORK.ALL;

merge WORK.EMP_NAME(in=Emp_N)

WORK.EMP_DEPT(in=Emp_D);

by Empid;

if (Emp_N and not Emp_D) or (Emp_D and not Emp_N);

run;

How many observations(填空)are in data set WORK.ALL after submitting the program?

A. 1

B. 2

C. 3

D. 5

55.The following SAS program is submitted:

data WORK.DATE_INFO;

X="01Jan1960"D

run;

Variable X contains what value?

A. the numeric

value 0

B. the character value "01Jan1960"

C. the date value 01011960

D. the code contains a syntax error and does not execute.

Answer: D

57)Given the SAS data set WORK.ONE:

N BeginDate

- ---------

1 09JAN2010

2 12JAN2010

The following SAS program is submitted:

data WORK.TWO;

set WORK.ONE;

Day=<_insert_code_>;

format BeginDate date9.;

run;

The data set WORK.TWO is created, where Day would be 1 for Sunday, 2 for Monday, 3 for Tuesday, ... :

WORK.TWO

N BeginDate Day

- --------- ---

1 09JAN2010 1

2 12JAN2010 4

Which expression successfully completed the program and creates the variable Day?

A. day(BeginDate) 果然变成了输出日期,所以是day()

B. weekday(BeginDate)

C. dayofweek(BeginDate)

D. getday(BeginDate,today())

Answer: B

60)Given the SAS data set WORK.PRODUCTS:

ProdId

Price ProductType

Sales Returns

------ ----- ----------- ----- -------

K12S 95.50 OUTDOOR 15 2

B132S 2.99 CLOTHING 300 10

R18KY2 51.99 EQUIPMENT 25 5

3KL8BY 6.39 OUTDOOR 125 15

DY65DW 5.60 OUTDOOR 45 5

DGTY23 34.55 EQUIPMENT 67 2

The following SAS program is submitted:

data WORK.REVENUE(drop=Sales Returns Price);

set WORK.PRODUCTS(keep=ProdId Price Sales Returns);

Revenue=Price*(Sales-Returns);

run;

How many variables does the WORK.REVENUE data set contain?

A. 2

B. 3

C. 4

D. 6

Answer: A

66)The following SAS program is submitted:

data WORK.SALES;

do Year=1 to 5;

do Month=1

to 12;

X + 1;

Output=60

end;

Output=5

end;

run;

How many observations(填空)are written to the WORK.SALES data set?

A. 0

B. 1

C. 5

D. 60

Answer: B

output的位置不同,答案也不同。我在SAS里跑过,应该是这样的:(1) do var1=1 to 7;

do var2 = 1 to 12;

X+1;

output;

end;

end;

run;

输出7*12=84个observation

(2) do var1=1 to 7;

do var2 = 1 to 12;

X+1;

end;

output;

end;

run;

输出7个observation

(3) do var1=1 to 7;

do var2 = 1 to 12;

X+1;

end;

end;

output;

run;

输出1个observation

67) Consider the following data step:

data WORK.NEW;

set WORK.OLD(keep=X);

if X < 10 then X=3;

else if X >= 10 AND X LT 20 then X=2;

else X=1;

run;

In filtering the values of the variable X in data set WORK.OLD, what value new value would be assigned to X if its original value was a missing value?

A. X would get a value of 1.

B. X would get a value of 3.

C. X would retain its original value of missing.

D. This step does not run because of syntax errors.

Answer: A

变成了if X<10 then X=3; else X=1; 所以选3.

寂静:

1.proc contents data=sasuser._all_ 后面要加个什么语句,才能suppresses the printing of detailed information about each file in the output;

NODETAILS

2. put(date, worddate20.)如之前总结的,选put(date, worddate20.)

April 15, 1999

3.split=“*”

一个data步中有一个label里面是这样的“xxxxx*xxxx*xxxx”,想在真正的label中*变空格,叫你选语句填空.类似“cat*dog”这样的格式,怎样实现将*指定为分隔符,实际输出“cat dog”的形式呢?答案选split=“*”

4.几个有效的dataset name

DATA

WORK.one

-test (

test_

2Test

好像还有几个不记得了

但是最后答案是一共4个有效

SAS data set names can be 1 to 32 characters long, must begin with a letter (A–Z, either uppercase or lowercase) or an underscore (_), and can continue with any combination of

numbers, letters, or underscores.

5.how many data sets can be combined when using APPEND statement?

2

Adds the observations from one SAS data set to the end of another SAS data set. only two data sets can be combined at one time, a BASE data set and a DATA data set.

6.sort by

填空题还有一道是填语句的,我只记得是考的by语句和acsending descending什么的,不难,题目看清哪个变量在前面就行。

7.Error, datalines缺分号

8.option yearcutoff=1920

给你两个date9.的日期,一个是20结尾,一个是19结尾,为你像个日期相减是多少,我选的-99

9.一道题考的是_N_配合if语句选输出

10.do i=1 to 7;

do i=1 to 10;

x+1;

end;

output;

end;

run;

问结果输出多少条observations(注意output的位置,我填的7)

11.还有一道考了ods pdf,水的一逼,其它选项都没有ods,什么open啦之类的,细心点就行ods html file='HTML-file-pathname'; ods pdf file='PDF-file-pathname';proc print data=sasuser.admit;

run;

ods _all_ close;

ods listing;

One of the features of ODS is that you can produce output in multiple formats concurrently by opening each ODS destination at the beginning of the program.

When you have more than one open ODS destination, you can use the keyword _ALL_ in the ODS CLOSE statement to close all open destinations concurrently.

12.infile xxxxxx missover;

var1 var2

var3 var4

var5 /*注意这里故意漏掉了符号?/dataline是(全是人名地点什么的字符):xxx,xxx,xxx,xxx,xxxxxxx,xxxx,xxxx,xxxx,xxxx,xxxxxxx,xxxx,xxxx,xxxx,xxxx问你如果后面加一个变量等于error,数据输出是怎样的?我选的那一列是1,0,0,1,因为execute的时候要出错只有第一行和最后一行会出错,当中两行因为missover就不会涉及到那个错误定义的变量吧。不知道这个答案对不对,心里也没底。13.end也考了,不过比较简单,答案选114.input数据的题大概题意是这样的:原始数据heu,afvf,salefsrbtbtf,gg,humanresourceahviu,fvfet,saledatatest;infile′原始数据‘dlm=′,′missover;inputvar110. vat2:10. var3:20.;

run;

You can use the MISSOVER option in an INFILE statement to prevent SAS from reading the next record when missing values are encountered at the end of a record.

26.有work.b,其中变量Char为字符15长。data a;

length Char 20; set b;format Char $15.;

run; 问Char最终在work.a里面的length为多少

其实要区分format概念和length概念,length还是最初声明的20,format不改变其length。

25.给一组data 里面有三个variable 是numeric 两个是character

然后问array arrayname{*}= _number_;

这个create了几个new variables

a)0

b)1

c)2

d)3

e)error

23.原来70题里面的Num='1'替换成contain(1),答案不变,contain没这个函数。

22.考察了libname用法以及libref的规则,我就记得最后在libname test_1 '_SAS_lib_location_', 和libname testdatablabla '_SAS_lib_location_' 里犹豫,后来选test_1是valid name,因为

libref is a shortcut name or a "nickname" for the aggregate storage location where your SAS files are stored. It is any SAS name when you are assigning a new libref. When you are disassociating a libref from a SAS library or when you are listing attributes, specify a libref that was previously assigned.

libref is 1 to 8 characters long, begins with a letter or underscore, and contains only letters, numbers, or underscores

21.有一个数据集n,其中变量a20.

data m;

length a 15

set n;

format a 25.;

run;

问a的length.

我选的是15,因为length a 15,不确定。。

1、一个数据集,告诉你某个变量长度为10,然后先用length定义为15,再用format 设为20,问最终输出的长度

20.我觉得retain考得挺多的,关键记住如果没有specify initial value(就像这样retain test_var), 那么默认为missing.还有就是retain只在complie阶段运行,到了execution阶段就没他什么事了

General form, simple RETAIN statement for initializing accumulator variables:

RETAIN variable initial-value;

雅思口语Part1话题汇总(话题归类版)

Part1: https://www.sodocs.net/doc/6c4463355.html, ●What is your full name? ●How should i address you? ●Have you got any English name? ●Are there any special meanings about your name? ●Who gave you this name? 2.Studies or work ●Which school are you studying now? what is your major? ●Who choose the major for you before you entering your university? ●What are the advantages and disadvantages of your university? ●Which subject you like most and which subject do you dislike most? Why? ●Do you like the school you are studying at? 3.Home ●Do you live in a house or a flat? ●Please describe the place where you live. ●How have you decorated your home (or, your room)? ●Is there anything (hanging) on the walls of your home (or your room)? (e.g., decorations) ●What can you see when you look out the window of your room (or, the windows of your home)? 4.Hometown ●Where is your hometown? (Or, what part of China do you come from?) ●Do you think you'll always live there? ●Where do you live at the moment? ●Do you like your hometown? (Why?/Why not?) ●What sorts of buildings are there in your hometown? 5.Books & Reading ●Do you like reading (books)? (Why?/Why not?) C ●What (kinds of ) books do you like to read? C ●(Similar to above) What (kinds of ) books do read (for enjoyment)? ●Are you reading any books at the moment? N ●Did you read much when you were a child? 6.Newspapers & Magazines ●What kind of newspaper do you have in China? ●What is your favorite magazine? ●When did you begin to read newspaper? ●What’s the difference between Chinese newspapers? ●Which one do you prefer to read, newspaper or magazine?

2010年雅思写作真题机经之Task2完整题目汇总

2010年雅思写作真题机经之Task2完整题目汇总(更新至2010年5月29日) 颜炜:2010年雅思写作真题机经之Task2完整题目汇总(更新至2010年5月29日) 2010年1月9日 Some people think that charity organizations should only offer help to people of their own country. But others believe that these organizations should give aid to people in great need wherever they live. Discuss both views and give your opinion. 2010年1月14日 In today's world, it is private companies rather than government who pay for and carry out most on scientific research. To what extend do you think the advantages outweigh disadvantages. 2010年1月23日 The gap between the rich and the poor is becoming wider. The rich is growing richer and the poor is growing poorer. What are the causes of this? What measures can be taken to reduce this problem? 2010年1月30日 Today there is a great increase in anti-social behavior and lack of respect to others. What are the causes of this? What measures can be taken to reduce this problem? 2010年2月6日 Air travel only benefits the richest people, majority people take no advantage from development of airplane. To what extent do you agree or disagree? 2010年2月11日 Some people say politicians promote the development of society. However others believe that it is scientists who have more influence on the world. Discuss both views and give your opinion.

第十六章分式复习

第十六章分式知识点和典型例习题 第一讲 分式的运算 【主要公式】1.同分母加减法则:() 0b c b c a a a a ±±=≠ 2.异分母加减法则:() 0,0b d bc da bc da a c a c ac ac ac ±±=±=≠≠; 3.分式的乘法与除法: b d bd a c ac ?=, b c b d bd a d a c ac ÷=?= 4.同底数幂的加减运算法则:实际是合并同类项 5.同底数幂的乘法与除法;a m ● a n =a m+n ; a m ÷ a n =a m -n 6.积的乘方与幂的乘方:(ab)m = a m b n , (a m )n = a mn 7.负指数幂: a -p =1p a a 0=1 8.乘法公式与因式分解:平方差与完全平方式 (a+b)(a-b)= a 2- b 2 ;(a ±b)2= a 2±2ab+b 2 (一)、分式定义及有关题型 题型一:考查分式的定义 【例1】下列代数式中:y x y x y x y x b a b a y x x -++-+--1, ,,21,2 2 π,是分式的有: . 题型二:考查分式有意义的条件 【例2】当x 有何值时,下列分式有意义 (1) 44+-x x (2)2 32+x x (3) 1 22-x (4) 3||6--x x (5)x x 1- 题型三:考查分式的值为0的条件 【例3】当x 取何值时,下列分式的值为0. (1)3 1 +-x x (2) 4 2 ||2--x x (3)653 222----x x x x 题型四:考查分式的值为正、负的条件 【例4】(1)当x 为何值时,分式 x -84 为正; (2)当x 为何值时,分式)1(35-+-x x 为负; (3)当x 为何值时,分式 3 2 +-x x 为非负数.

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第一节考试第一阶段话题总结 第一阶段主要是关于个人情况的介绍,考官会问一些具体的问题,内容涉及考生的工作、学习情况,家乡,爱好,以及关于身边的衣食住行等问题。 About yourself 1.What’s your full name? 2.What’s your English name? 3.Does your Chinese name have any special meaning? Literally:Lean on a sailing boat to see in the distance Make a good wish that Everything is going smoothly 4.Do you want to change your name? Smoothly & successfully Hometown and cities 1.Where do you come from? / Where are you from? / Where is your hometown? Wuhan, a large-sized city in the middle of china, and it is also a crucial city during revolution period in the history 2.Do you think your hometown is a good place for young people to live in? 3 aspects: @.local delicious food snack street : hot dry noodles , fried bread stick ,stinky tofu shrimp balls ,spicy hot noodles, hot hot hot, hot pot, spring rolls @shopping malls & amusement parks 国广&欢乐谷 @university city, esp.Wc district relatively high education standard 3.What aspects do you like best in your hometown? 4.What aspects do you dislike in your hometown? Larged-sized city large population crowded in the station competetion is fierce In the process of contruction of infrustracture ==road traffic jam 5.What landscapes surround your hometown? In the middle of china it is located in the jianghan plain the long river flows through crossover point of han river—tributary river view a place covered with lakes “city with thousand lakes” ---the east lake next to a basin named SICHUAN basin ---in the west of WH south direction ---old forest SHEN NONGJIA –tourist spot 6.What are the differences between your hometown and Beijing? Capital well-known boast of its long history political center More urbanized well-developed transportantion system\ **On the contrary, less modern , infrustractures are not completed in the middle snacks of north and south abundant choice tedious less stressed 7.What are the characters of local people in your hometown? Friendly and warm-hearted talkative esp. senor citizens

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