# What is the appropriate way to use WTFINL in Stata when using single year CPS data?
**URL:** https://forum.ipums.org/t/what-is-the-appropriate-way-to-use-wtfinl-in-stata-when-using-single-year-cps-data/879
**Category:** CPS
**Created:** [April 29, 2015, 8:37pm UTC](https://forum.ipums.org/t/what-is-the-appropriate-way-to-use-wtfinl-in-stata-when-using-single-year-cps-data/879 "2015-04-29T20:37:00Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@mbarcus](https://forum.ipums.org/u/mbarcus)
#### Post date: [April 29, 2015, 8:37pm UTC](https://forum.ipums.org/t/what-is-the-appropriate-way-to-use-wtfinl-in-stata-when-using-single-year-cps-data/879/1 "2015-04-29T20:37:00Z")
I am using 2011 CPS data and need to apply WTFINL to correctly weight the data. I am looking at person-level results.
When I try “svyset: [pweight=wtfinl” in Stata, I get an error message saying that the PSU is invalid. I have searched high and low to find out what the correct PSU is for this data and can’t find any information. Further, I am not terribly familiar with weight in general, so I want to make sure that I have included the correct specifications for the weights (including anything regarding strata, etc.)
Thank you.
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### Author:  [@Tim\_Moreland](https://forum.ipums.org/u/Tim_Moreland)
#### Post date: [May 1, 2015, 11:14pm UTC](https://forum.ipums.org/t/what-is-the-appropriate-way-to-use-wtfinl-in-stata-when-using-single-year-cps-data/879/2 "2015-05-01T23:14:00Z")
If you are simply trying to [weight](https://cps.ipums.org/cps-action/faq#ques7) your data, then you should use the ‘weight’ option with any of your normal STATA commands. For example, “tab year [iweight=wtfinl]” will give you the weighted population by year for a non-Supplement sample. For more information on using weights, see the CPS training materials [here](https://www.pop.umn.edu/data-user-resources/data-support).
Hope this helps.