Other variable functions: age
,
animal
, answer
,
area
, children
,
coin
, color
,
date_stamp
, death
,
dice
, dna
, dob
,
dummy
, education
,
employment
, eye
,
grade_level
, grade
,
group
, hair
,
height
, income
,
internet_browser
, iq
,
language
, level
,
likert
, lorem_ipsum
,
marital
, military
,
month
, name
,
normal
, political
,
race
, religion
,
sat
, sentence
,
sex_inclusive
, sex
,
smokes
, speed
,
state
, string
,
upper
, valid
,
year
, zip_code