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Re: st: question on graphing


From   Nick Cox <[email protected]>
To   [email protected]
Subject   Re: st: question on graphing
Date   Tue, 5 Apr 2011 08:08:17 +0100

Susan's wording was not really ambiguous. Her reference to separate
lines shows that she wants a plot of predictions as they vary with age
for the possible values of indicator (dummy) variables.

Nick

On Mon, Apr 4, 2011 at 7:39 PM, Duha Altindag <[email protected]> wrote:

> I'm curious:
> Isn't  "the relationship between predicted logearnings and age holding
> the other variables constant" same thing as the partial derivative of
> log earnings with respect to age?
> And so this is just a line with slope _b[age]?
>
> On Mon, Apr 4, 2011 at 12:23 PM, Nick Cox <[email protected]> wrote:

>> No add-ons needed.
>>
>> sysuse auto
>> gen hiprice = price > 6000
>> reg mpg weight hiprice foreign
>> predict mypredict
>> egen group = group(hiprice foreign), label
>> separate mypredict, by(group) veryshortlabel
>> scatter mpg weight || line mypredict? weight, sort c(L ..)
>>
>> Nick
>>
>> On Mon, Apr 4, 2011 at 6:10 PM, Dimitriy V. Masterov <[email protected]> wrote:
>>> Susan,
>>>
>>> I think you can accomplish this with:
>>>
>>> (1) -margins- to get the profiles. Use the at option for the age variable.
>>> (2) -parmest- or -stastby- to save the profiles as a dataset
>>> (3) Plot the results using -eclplot-
>>>
>>> DVM
>>>
>>>
>>> On Mon, Apr 4, 2011 at 12:54 PM, Averett, Susan L
>>> <[email protected]> wrote:
>>>> Hi, I am running a regression with logearnings as the dependent variable and age in  years, a female dummy variable and a dummy equal to 1 if the individual has a college degree. I would like to graph my age/earnings profile in Stata...i.e. I'd like to graph the relationship between predicted logearnings and age holding the other variables constant but I cannot figure out how to do this. I'd also then like to plot the lines separately for men and women on the same graph.
>>>> Any suggestions?
>>>>
>>>> Here is my regression:
>>>>
>>>> regress lahe age female bachelor

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