POLS 210 Lecture Notes - Lecture 5: Institute For Operations Research And The Management Sciences, Gun Control

• School: Ball State University
• Department: Political Science
• Course: POLS 210
• Professor: Steven R. Hall

Document Summary

Independent variables are always in the columns, the dependent variables are always in the rows. Interpret by comparing across columns along dv value. Use li(cid:374)go like (cid:862)the results support the hypothesis(cid:863) do(cid:374)"t say true or pro(cid:448)e. Obviously, they are not the same number, but is the number different enough (sometimes there is error). Interested in mean values of dv for different iv values. We"re (cid:374)e(cid:448)er goi(cid:374)g to get the sa(cid:373)e (cid:374)u(cid:373)(cid:271)ers so (cid:449)e (cid:449)a(cid:374)t to talk a(cid:271)out the size of these differences. We have to be aware of the underlying scale of measurement. Ca(cid:374)"t just look at the (cid:374)u(cid:373)(cid:271)ers (cid:271)e(cid:272)ause (cid:449)e ha(cid:448)e to understand the scale. We do(cid:374)"t see the (cid:272)ausality i(cid:374) the ta(cid:271)les (cid:271)e(cid:272)ause (cid:449)e (cid:272)a(cid:374)"t see (cid:272)ausality. Causality is i(cid:374) your theory, it"s (cid:374)ot i(cid:374) reality for you to o(cid:271)ser(cid:448)e. The problem with this is we can find results that fit our hypothesis perfectly but are explained by something else entirely.