CMNS 260 23 November 2011

Assignment 6 1) Introduction Describe conceptual definitions and operational measures: what do you want to ask the data set? Are the data available appropriate to answer your questions? Identify INDEPENDENT, DEPENDENT, and CONTROL variables 2) Description and Discussion of Univariate Statistics for Each Variable Three frequency distributions (3 tables, 3 graphs – one for each variable Describe, in words, each distribution If you grouped categories together, explain why

Assignment 6 continued… 3) Present & Discuss Cross-tab (Contingency/Bivariate Table) of Independent and Dependent Variables One table, with column percentages Discuss your findings 4) Present & Discuss Trivariate Table Discuss your findings using the ELABORATION PARADIGM Which pattern do you find? (p.240-243)

Assignment 6 continued… 5) Conclusion Briefly summarize your findings How do the conceptual and operational definitions you started with fit together? How might the survey be improved for future use?

Helpful Resources See lecture notes about naming tables correctly Examples of written descriptions are also included in lecture notes (Lecture 11)

Ways of Presenting of Bivariate Tables Table 1. Percentage in support of strike by type of school Percent supporting Type of School Strike Secondary 60% (800) Elementary 30% (1000) __________________________________________________________ N = 1800 Dependent Variable Independent Variable Serial Number Descriptive Caption Variable One category of dichotomous dependent variable Categoriess Marginals for independent variable Total Sample

DEPENDENT INDEPENDENT Table 3: Experience of car accident(s) by Gender of Driver and Distance Driven Annually (column percentages) CONTROL

Q39 Answer * Q3 Answer Crosstabulation Total female male Q39 Answer don't know Count 23 17 40 % within Q39 Answer 57.5% 42.5% 100.0% no 6 2 8 75.0% 25.0% yes 13 .0% 42 19 61 68.9% 31.1%

Q4 one or more siblings (brother or sister) * Q1 Answer Crosstabulation Count Q1 Answer Total 20-24 years old 25-29 years old Over 34 years old under 20 years old Q4 one or more siblings (brother or sister) no 33 7 1 4 45 yes 17 18 50 5 63