POL SCI 3 Lecture Notes - Lecture 16: Srf 1, Linear Map
25 Oct 2016
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Index: create one for multiple variables/ component variables to represent a concept, then combine the variables to create one single variable: there isn"t 0 tone. Doesn"t matter what numbers you use as long as each type get a different. People may easily confuse 1 and 2 on the keyboard. Substantive recode: change meaning: use 1 0 instead of 1 2 3 4 5 6 for ms, contrast people who are married (1) and who are not married (0) Codebook: gun control strongly favor (1) weakly favor (2) weakly oppose (6) strongly oppose (7) Practical recode: change to 1 2 3 4. If you want to distinguish differently, use substantive recode (1) people opposed (2) people favored. More statistical possibilities: but assumption that distance between 1 and 2 is just as much as the distance between 2 and 3 (may be problematic) Using gc, can substantively recode to sf 1, wf 2, wo 4, so5.
