1. CMNS 260
23 November 2011

2. 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

3. 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 )

4. 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?

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

6. 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

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

8. 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%

9. 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