Can you calculate the mean, median and mode of the following data set
using data step logic? Don't use any function or procedure.
data a;
input age @@;
datalines;
22 32 32 32 43 23 24 56 45 54 28 29 27 26 25 28 30 20 18 37 36 47 46
56 19 20
;
run;
I have calculated the mean which i have posted in the answer section.
- 6 Answers
- 16391 Views
- HSBC, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / sattwik kumar
data b;
set a end=lastobs;
age_temp+age;
count+1;
if lastobs then
mean=age_temp/count;
run;
| Is This Answer Correct ? | 19 Yes | 4 No |
Answer / rg
data temp;
input age @@;
cards;
8 7 7 2 67 9 7 7 1 2 45 34 22 45 23 8 34 23
run;
proc sort data=temp; by age ;run;
data a(keep = median mode_age mean);
last_age=age;
retain max_cnt mode_age median;
set temp end=lastobs nobs=n;
by age;
age_temp + age;
/*Median */
if mod(n,2) = 1 and _n_ = (n+1)/2 then do ;median=age; end;
if mod(n,2) = 0 and _n_ = (n+2)/2 then do ;median=(age + last_age)/2; end;
/*Mean*/
if lastobs then do mean=age_temp/n ; end;
/*Mode */
if first.age then cnt =1; else cnt+1;
if last.age then lst_cnt=cnt;
if lst_cnt > max_cnt then do; max_cnt = lst_cnt; mode_age = age;end;
if lastobs then output;
run;
| Is This Answer Correct ? | 9 Yes | 1 No |
Answer / chandrakanth
options firstobs=1 obs=26;
data a;
input age @@;
datalines;
22 32 32 32 43 23 24 56 45 54 28 29 27 26
25 28 30 20 18 37 36 47 46
56 19 20
;
run;
proc sort data=a out=ab;
by age;
run;
options firstobs=13 obs=14;
data c;
set ab end=last;
sum_age+age;
if last then median=sum_age/2;
run;
we need observation 13 and 14 because total number of observations is n=26 when n is even we need to do mean of two observations n/2 and (n/2)+1 which is 13th and 14 th observations in this case.
let me know if you need more help... I'm still thinking about mode...will send once I get it
| Is This Answer Correct ? | 3 Yes | 2 No |
Answer / paul
data b;
set a end=lastobs;
age_temp+age;
count+1;
if lastobs then
mean=age_temp/count;
if _n_=13 then
Median=Age; /*median is the mid value */
run;
proc sort data=b out=c;
by age;
run;
data d;
set c;
if first.age=0 and last.age=0 then
Mode=age;/*mode is the most repeated value*/
by age;
run;
| Is This Answer Correct ? | 3 Yes | 9 No |
Answer:
data new;
set a end = last;
count+1;
age_n+age;
if last then do;
mean = round(((age_n)/(count)),.8);
median = ((count+1)/2);
end;
run;
By the above program we can calculate the mean and median.
lets us know me, if anybody find the logic for find mode
| Is This Answer Correct ? | 0 Yes | 6 No |
What is difference between rename and lable in sas?
what is sas application server, database server, sas olap server and sas metadata server? : Sas-di
Name statements that are recognized at compile time only?
why is the use of Retrive statement and give me with example?
What are some problems you might encounter in processing missing values? In Data steps? Arithmetic? Comparisons? Functions? Classifying data?
What are the difficulties u faced while doing vital signs table or dataset?
What’s the difference between var b1 – b3 and var b1 — b3?
Are the preferred term counts are always equal to Body system counts? If so, Why are they equal if not why they are not equal?
Best trainer in hyderabad for sas banking.if any one have details pls provide contact details.
explain the difference between alternate key, business key, foreign key, generated key, primary key, retained key and surrogate key ? : Sas-di
There are 200 observations in a dataset, i want to pull out the observation no's 100, 150,180,190 by using Proc SQL? How you can get it?
what do the pad and dim functions do? : Sas programming
Teradata 
