Quiz SAS DO loops

Which statement is false regarding "do" loops?

They can contain additiona clauses

They can generate multiple observations

They can be used to combine data and proc steps

They can be used to read data

How many times does this code run? data work. earnings; amount=1000; rate=0. 075/12; do month=1 to 12; amount+amount*rate; format amount dollar12. ; output; end; run;

If 5000 is invested on Jan 1 of each year for 15 years, complete the data step so as to determine the value of the account after 15 years at a constant 10 percent return rate.

Do count=1 to 15;

Do count=1 to 15 by 10%;

Do count=1 to capital;

Do count=capital to (capital*. 1);

What would be the stored value for year in the following? do year=1999 to 2004; capital+5000;capital+capital*. 1;end;run;

Missing

1990

2004

2005

Which of the following is false regarding this code? data work. invest; do year=1990 to 2004; capital+5000;capital+capital*. 1;output;end;run;

Output statement writes current values to the data set immediately

Stored value for year 2005

Output statement overrides automatic output at the end of the step

Do loop performs 15 iterations

How many observations will there be in work. earn? data work. earn; value=2000; do year=1 to 20; interest=value*0. 075; value+interest;output;end;run;

Which line generates the same records as this code? do until(capital gt 500000);

Do while(capital ge 500000);

Do while(capital=500000);

Do while(capital le 500000);

Do while(capital>500000);

Complete the statement so that the program stops generating observations when distance is 250 miles or when 10 gallons of fuel have been used?

Do gallons=1 to 10 while(distance<250);

Do gallons=1 to 10 while(distance>250);

Do gallons=1 to 10 over(distance le 250);

Do gallons=1 to 10 until(distance=250)

Which would be used to compare the result of investing 4000 a year for five years in three differnt banks that compound interest monthy?

Do while

Nested do loops

Do until

Do groups

Do loops can be used to sample data in a random way ?

True

False