* OLS Model for Mean Hourly Wage
*
* Keywords:
*     regression, ols, wage, education, graph
*
* Description:
*     We illustrate how to estimate a Linear OLS Model for Mean Hourly Wage
*     and create a graph of the data
*
* Author(s):
*     Skif Pankov
*
* Source:
*    Damodar N. Gujarati and Dawn C. Porter, Basic Econometrics - 5th Edition
*    McGraw-Hill International Edition, Chapter 2, Example 2.1 (page 46)
*
sample 1 13

* Reading the datafile and name variables
read (data_2.1.shd) yrssch avwage

* Generating a graph of av_wage against yrs_sch, specifying not to include
* the data keys and to plot a line through the datapoints only
graph avwage yrssch / nokey lineonly 

stop