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Tue 8-10, Period III, Jan-Feb 2018

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Presentation on theme: "Tue 8-10, Period III, Jan-Feb 2018"— Presentation transcript:

1 Applied quantitative analysis a practical introduction SOSM-405 (5 cr) Session 4
Tue 8-10, Period III, Jan-Feb 2018 Faculty of Social Sciences / University of Helsinki Teemu Kemppainen

2 Contents Measurement Sum variables Exploratory factor analysis
Hands-on: Compute Split Select cases EFA

3 Measurement Observing and recording the characteristics of study units with a structured procedure  variables Height, weight, income, age, education level…pretty easy Attitudes, subjective experiences, well-being…more difficult, but possible Also classifying is ”measuring”…cf. text analysis and classification, counting… Good measurement is valid and reliable

4 A graphical intuition to measurement
Reliability: repeatability, stability, consistency (alpha) Validity: measuring what we want to measure Babbie E. 2010: The Practice of Social Research. 12th ed. Wadsworth.

5 ”Things”, items and aggregate measures
E.g. sum variable, factor score variable Latent constructs, factors, dimensions…”things” Survey Items Why: content validity & reliability  often better indicators than single items  work nicely in regression Measurement error Vehkalahti K 2007: Monimuuttujamenetelmät.

6 Hands on Compute Split Select cases EFA


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