Transcription of Getting Started in Data Analysis using Stata
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Getting Started in Data Analysis using Stata
Getting Started in Data Analysis using Stata (v. )Oscar 2007 ~otorres/PU/DSS/OTR Stata Tutorial Topics What is Stata ? Stata screen and general description First steps: Setting the working directory (pwd and cd ..) Log file (log using ..) Memory allocation (set mem ..) Do-files (doedit) Opening/saving a Stata datafile Quick way of finding variables Subsetting ( using conditional if ) Stata color coding system From SPSS/SAS to Stata Example of a dataset in Excel From Excel to Stata (copy-and-paste, *.csv) Describe and summarize Rename Variable labels Adding value labels Creating new variables (generate) Creating new variables from other variables (generate) Recoding variables (recode) Recoding variables using egen Changing values (replace) Indexing ( using _n and _N) Creating ids and ids by categories Lags and forward values Countdown and specific values Sorting (ascending and descending order) Deleting variables (drop) Dropping cases (drop if) Extracting characters from regular expressions Merge Append Merging fuzzy text (reclink) Frequently used Stata commands Exploring data: Frequenci
Log files help you to keep a record of your work, and lets you extract output. When using extension *.log any word processor can open the file. Click on “Save as type:” right below ‘File name:” and . select Log (*.log). This will create the file *.log which can be read by any word processor or by Stata (go to File – Log – View).
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