Introduction to SPSS May 21, 2008 Ivan Katchanovski, Ph.D. POL 242Y-Y

SPSS Data Editor: Data Entry Example Data entry example – TV vote for “Greatest Portuguese” – SPSS Data Editor Variables – Names/Labels : Use “Variable View” in SPSS Data Editor – Observations/Values: Use “Data View” in SPSS Data Editor – Unit of analysis 2

Vote results for “the Greatest Portuguese” in Portugal,” % NameTVvotePoll1Poll2 Salazar41117 Cunhal1957 Mendes1386 Alfonso Camoes41716 John II3311 Henry3412 Pessoa2119 Pombal2108 Gama183 3

Example of SPSS Analysis: Reliability Test Research question: Which method of public opinion measurement concerning the “Greatest Portuguese” is reliable? – Vote in a TV program (N=160,000) – Random public opinion polls (N=697; N=1,048) Level of measurement of variables – Name – TVvote – Poll1 – Poll2 SPSS Frequencies command – Analyze/Descriptive Statistics/Frequencies SPSS Command: Analyze/correlate/bivariate 4

Recoding Variables Example – Recode Poll1 from interval/ratio variable into ordinal variable 17/23=High 8/11=Medium 3/5=Low SPSS recoding command – Transform/Recode into Different Variables SPSS saving command – Output: File/Save – Output: File/Export/Word/RTF file – Dataset: File/Save 5

SPSS Datasets World Values Survey – 1999/2004 wave – Includes Canada – World 2000 National Election Study (US) 2006 Canadian Election Study – 6

WebStats: Web version of SPSS Web access: – Datasets and Codebooks – Lab manuals – Frequency command Recode variable command 7

Lab Assignment Lab assignment # 1 Due May 28, 2008 Tutorials: 5-6 p.m. & 8-9 p.m. on Monday, May on Wednesday, May 27 8