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# Re: st: basic question

 From Nadine Brooks To statalist@hsphsun2.harvard.edu Subject Re: st: basic question Date Mon, 22 Aug 2011 22:24:13 -0300

```But it is not what is happening. Take a look:

sum v9532 v9982 v1022

Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
v9532 |    170014    831.5625    1451.442          3     120000
v9982 |      8326    686.3957    1179.807          1      48000
v1022 |       672      957.75    1422.576          8      11000

. gen sal= (v9532+v9982+v1022)
(409603 missing values generated)

. sum v9532 v9982 v1022 sal

Variable |       Obs        Mean    Std. Dev.       Min        Max
-------------+--------------------------------------------------------
v9532 |    170014    831.5625    1451.442          3     120000
v9982 |      8326    686.3957    1179.807          1      48000
v1022 |       672      957.75    1422.576          8      11000
sal |       638    3999.621    4536.377         68      40000

My variables meas:

v9532: income from main job
v9982: income from secondary job
v1022: third or more of income jobs

But most of the people have only one job, so they get missing to v9982
and v1022...

2011/8/22 Daniel Marcelino <dmsilv@gmail.com>:
> Well, I don't know exactly what yours variables means.
> If you have numeric values, you result should be:
> v1 v2 v3  sal
> 1   2   3    6
> 1   .    1    2
>
>
> Daniel
>
> On Mon, Aug 22, 2011 at 9:11 PM, Nadine Brooks <nb.statalist@gmail.com> wrote:
>> By there are missing values particularlly in v9102 and v1022, so I
>> think that I can not use the operator +, can I?
>>
>>
>>
>> 2011/8/22 Daniel Marcelino <dmsilv@gmail.com>:
>>> try
>>>
>>> gen sal= (v9535 + v9102 + v1022)
>>>
>>> Daniel
>>>
>>>
>>> On Mon, Aug 22, 2011 at 8:54 PM, Nadine Brooks <nb.statalist@gmail.com> wrote:
>>>> Hi statalist
>>>>
>>>> I am a beginner Stata user and I am having trouble to generate a new
>>>> variable. I am using:
>>>> gen sal=sum (v9535,v9102,v1022)
>>>> and I am getting: v9535,v9102,v1022 invalid name
>>>> r(198);
>>>>
>>>> But the names of all the variables are correct, so what I am doing wrong?
>>>>
>>>> Thanks
>>>> *
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>>>> *   http://www.ats.ucla.edu/stat/stata/
>>>>
>>>
>>>
>>>
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>>
>> *
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>>
>
>
>
> --
>
> *
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>

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```