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# st: cum sum in new variable

 From Max Fotbollen To Subject st: cum sum in new variable Date Fri, 15 Apr 2011 10:04:04 +0200

```Sorry, in my previous mail I inserted a wrong column in my ex. Here is the correct one:

Hi
I need to have cumulative sum of one certain real number variable set into a new variable. Also I need to be able to list the value of variable in a way one can see all degits.

Ex:
This my original variable
list rrs in 1/16
+----------+
|      rrs |
|----------|
1. |        1 |
2. |        0 |
3. |        1 |
4. |        0 |
5. |        0 |
|----------|
6. |    11025 |
7. |       25 |
8. |     1444 |
9. |        1 |
10. |        0 |
|----------|
11. |        0 |
12. |   252004 |
13. |     1089 |
14. |       36 |
15. |    21316 |
|----------|
16. | 2.57e+07 |

Actually what i need is the cumulative sum of this variable set into one variable. I do not how to do it.(this is my first question).
So what I do is to sum(rrs). This is the result i get

+----------+
|----------|
1. |        1 |
2. |        1 |
3. |        2 |
4. |        2 |
5. |        2 |
|----------|
6. |    11027 |
7. |    11052 |
8. |    12496 |
9. |    12497 |
10. |    12497 |
|----------|
11. |    12497 |
12. |   264501 |
13. |   265590 |
14. |   265626 |
15. |   286942 |
|----------|
16. | 2.60e+07 |
+----------+

The second question is that i want to see the value of the last observation in the same format as in the previous observation.

Max
P.S. I read about cumsum, but i think it is only for ones and zeros

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```