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Quiz Sciences
Arrays in SAS
created by
tomowsiak
on 30 Mar 12
Sciences
Medium level
(60% of success)
10 questions - 55 players
Chapter 16 from the book
1
In the code shown, how many records are generated?
7
However many are in the original file
No records are generated but the code runs
The code is broken
2
Will the code shown below run, and why or why not?
Yes. . all looks good
No. . too few variables in the list to match the dimension of the array
There is another problem not listed here
The problem is in the input data step
3
In the picture shown, the array name is shown correctly.
No. . the array name includes the index
Yes. . this is the correct way of showing just hte array name
4
Will the code shown below.
Yes. . there is nothing wrong with it. .
No. . 5 : 6 means we're getting at columns 5 and 6. . so we need those int he do loop
It won't work, but for a different reason
5
The following code is submitted. What are the results?
A file called mylib. report2 is created, but it's empty
A file called mylib. report2 is created, and it has 7 fields in it, but the number of observations is unknown from the code.
A file called mylib. report2 is created, and it has 7 fields and 20 obs.
This code doesn't work at all
6
The following code is submitted. What are the results?
This code is broken, so nothing happens.
This code imports 8 fields from the csv, and then creates a new file called report2 in mylib2.
The import step runs, but the array step is broken.
None of the above.
7
The following code is submitted. What are the results?
This code works perfectly, and creates fields, some of which are transformed and some are not.
This code is broken. The line names(i) will create an index out of bounds message.
The part of the code given by the transformation of daytemp works, but not the part given by names.
Something else
8
The following code is submitted. What are the results?
Nothing. . this code is broken
This code works. Now there there is a 1 as the index for names, so it works.
9
Why are arrays so powerful?
They work out a lot : )
The allow us to reference elements one by one, without having to make a long, error prone list.
Usually, arrays are used with do loops to produce make code very compact.
Both options b and c above.
10
What's the correct way of thinking about array execution?
A record is read in. The array operates on the elements(columns). . record is output. . next is read in and so on
A column is read. . then we go down the column using the array
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