Thursday September 24, 2009 ± Lecture 3 Tables and Data and Spuriousness
Today: Read BRYM Chapter 2, UNGAR Chapter 2
From 4 photos in PPT
Variables Used Variables Ignored/inadequate
-Class -Family composition
-Race -Single family
Sociology VS. Journalism ± How would sociology study the 4 families?
-Use random sample to represent population.
-Measure and quantify samples
-Ex. Do systemic counting
Variables ± Take on two or more values
-Gender: Male or Female?
-Religion: What religion? How religious?
-SES: Social Economic Status
-Types on variables are:
1. Independent variable: Come first in time and cause/affect dependent variable. (Ex.
gender may affect attitude)
2. Dependent variable
*Know/ study research cycle in Brym Textbook (pg. 37), and how to read tables/graphs*
Tables and Graphs
-Need to calculate % along the independent variable
-NOTE on tables/ graphs: Number of variables, independent and dependent variables, what is the
-Reliability: Consistency in measurement.
-Validity: Precision in measurement. (Measuring what you actually want)
-Generalizability: Access the relevance beyond case studied.
-Causality: Cause and effect relationship among variables.
*Study diagram in textbook Fig 2.3 pg. 44*
Look at Causations and Spuriousness
-Causation: Act of causing