## Do LOOPS

Occasional Contributor
Posts: 7

# Do LOOPS

on January 1 of each year,\$5000 is invested in an amount .complete the data step with do loop to determine the value of the account after 15 years 1) if a constant annual invest rate of 10% is expected .2)if a compounding annual interest rate of 10 % is expected .?

Super User
Posts: 10,623

## Re: Do LOOPS

This homework assignment has been posted multiple times here. Use the search function.

When posting a question, always show the effort you have already made (code & log), and where it doesn't do what you expect.

We're not here to support lazy students, but help people who make an honest effort at solving their issue themselves.

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Maxims of Maximally Efficient SAS Programmers
How to convert datasets to data steps
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Occasional Contributor
Posts: 7

## Re: Do LOOPS

I have tried this but i think both of them are wrong

/*1. (1) DO LOOP- CONSTANT ANNUAL INTEREST RATE OF 10% */

data earning;
do year= 1 to 15;
rate=0.1;
amount+5000;
amount+(amount*0.1);
output;
end;
run;

/*1. (2) DO LOOP- COMPOUNDING ANNUAL INTEREST RATE OF 10% */

data earning2;
do year= 1 to 15;
rate=0.1;
amount+5000;
earned+(amount+earned)*rate;
output;
end;
run;

Super User
Posts: 10,623

## Re: Do LOOPS

And what are the values you would expect?

---------------------------------------------------------------------------------------------
Maxims of Maximally Efficient SAS Programmers
How to convert datasets to data steps
How to post code
Occasional Contributor
Posts: 7

## Re: Do LOOPS

DO LOOPS (1) SIMPLE INTEREST- interest will calculate every year but that interest will add in amount after 15 years
(2) COMPOUND INTEREST-every year interest will add in amount
Super User
Posts: 13,950

## Re: Do LOOPS

SAS also has a number of financial functions and/or options for the FINANCE function that allow many calculations of this specific type without any looping.

Occasional Contributor
Posts: 7

## Re: Do LOOPS

DO LOOPS (1) SIMPLE INTEREST- interest will calculate every year but that interest will add in amount after 15 years

(2) COMPOUND INTEREST-every year interest will add in amount

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