Student Opinion about the Vietnam War
Vietnam.Rd
A survey of student opinion on the Vietnam War was taken at the University of North Carolina at Chapel Hill in May 1967 and published in the student newspaper. Students were asked to fill in ballot papers stating which policy out of A,B,C or D they supported. Responses were cross-classified by gender/year.
The response categories were:
A
Defeat North Vietnam by widespread bombing and land invasion
B
Maintain the present policy
C
De-escalate military activity, stop bombing and begin negotiations
D
Withdraw military forces Immediately
Usage
data(Vietnam)
Format
A frequency data frame with 40 observations representing a 2 x 5 x 4 contingency table on the following 4 variables.
sex
a factor with levels
Female
Male
year
year of study, an ordered factor with levels
Freshmen
,Sophomore
,Junior
,Senior
,Grad student
response
a factor with levels
A
B
C
D
Freq
cell frequency, a numeric vector
Details
For some analyses, it is useful to treat year
as numeric,
and possibly assign grad students a value year=7
.
Examples
data(Vietnam)
## maybe str(Vietnam) ; plot(Vietnam) ...