POLI 3000 Study Guide - Comprehensive Final Exam Guide - Standard Deviation, Standard Error, Null Hypothesis

• School: University of Iowa
• Department: Political Science
• Course: POLI 3000
• Professor: Elizabeth Menninga

Document Summary

Measurement: operationalization, need to try and make the broad concepts into concrete ways to measure something, want to do this as systematically as possible, have to ask what the unit of analysis is, people. Clarify are. operationalization: hypothesis concept--- conceptual definition- operational definition- variable- measure. What is an appropriate window of time frame: have to find the same people. What (cid:373)akes a (cid:373)easure(cid:373)e(cid:374)t good?": clarity, reliability, strategies for reliability, test-retest relability. Interrater reliability: reliability of scales, split half reliability, take all of the components, break them in half and reshuffle the order. Measurement error: random error- noise, example: radar guns. Also, this says nothing about participation, elections, etc: construct validity, does it behave as expected, a little more objective. Is it correlated with stuff is should be correlated with, and is it (cid:374)ot (cid:272)orrelated (cid:449)ith thi(cid:374)gs it should(cid:374)"t (cid:271)e (cid:272)orrelated (cid:449)ith: alternative type: predictive validity.