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Using SAS 9.3: An Introduction

Using SAS 9.3: An Introduction. LSU Economics Department January 27, 2012. Access to SAS. SAS 9.2 on VLAB In Econ Dept lab (for Econ Grad students) Department of Experimental Statistics. SAS Resources & Workshops. http:// www.bus.lsu.edu/hill/computing/sas/sas.htm

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Using SAS 9.3: An Introduction

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  1. Using SAS 9.3: An Introduction LSU Economics Department January 27, 2012

  2. Access to SAS • SAS 9.2 on VLAB • In Econ Dept lab (for Econ Grad students) • Department of Experimental Statistics

  3. SAS Resources & Workshops • http://www.bus.lsu.edu/hill/computing/sas/sas.htm • http://www.bus.lsu.edu/hill/computing/sas/sasworkshop.htm

  4. What is SAS • SASdescribes itself as “…the leader in business intelligence and predictive analytics software.” Its users include 96 of the top 100 companies on the 2006 Fortune Global 500 List. • More than 43,000 business, government and university sites rely on SAS. • Organizations in 113 different countries use SAS.

  5. SAS in Job Market • Job Openings for Economists, Full Time nonacademic listings. Search PDF files for “SAS”. • November 2010 • February 2011

  6. What is SAS • SAS is an elephant. • Stata, EViews, MATLAB, etc. are fleas. • SAS is not nimble. It does not quickly add new methods. It does not release updates weekly. • SAS has superior numerical optimization algorithms. • SAS matrix programming competitive to MATLAB and Gauss, far superior to MATA.

  7. What is SAS • SAS can process huge amounts of data. • Many data sites provide SAS input statements for data files. • CPS, 2008 survey: 421911 observations and 1023 variables in less than 40 seconds CPU time on my laptop • NBER data: Many downloads in SAS format.

  8. SAS Documentation • SAS Product Documentation • Code samples • UCLA: Documentation and Movies • Hill and Campbell, Using SAS for Econometrics, John Wiley and Sons, forthcoming • Data Examples from Principles of Econometrics, 4th Edition

  9. SAS 9.3 • Starting SAS 9.3

  10. What’s New

  11. Changing Preferences

  12. Old fashioned output & new graphics

  13. Overview of Screens • Enhanced Editor • SAS Log • SAS Output • Explorer • Results • Default path

  14. SAS Programs /*--------------------------------------------*/ /* Example 1: Read embedded data */ /*---------------------------------------------*/ datahtwt; * name data set; input name $ sex $ age height weight; * specify variables; sum = height + weight; * sum; diff = height - weight; * difference; prod = height * weight; * product; div = height / weight; * division; power = age**2; * age squared; /* next statements define data lines */ datalines; alfred M 14 69 112 alice F 13 56 84 barbara F 14 62 102 henry M 15 67 135 john M 16 70 165 sally F 16 63 120 ; run; /* print data */ procprint data=htwt; title 'Height-Weight Data'; run;

  15. Reading data • Embedded in file • External ASCII • Existing SAS data set • Import Wizard for Excel, SPSS, Stata and other data formats • StatTransfer (Econ grad lab)

  16. Summary Statistics • Summary Statistics: PROC MEANS • Detailed Statistics: PROC UNIVARIATE • Basic Regression • HELP

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