The following are examples of variable that researchers commonly measure on surveys. Name and define the level of measurement for each.
a. Highest level of education (measured as completed some high school, completed high school, completed some university courses, etc.)
b. The color of a person\'s hair (measured as blond, brunette, redhead)
c. Personal income in a year (measured by asking participants to indicate their gross yearly income)
The question belongs to Statistics and it is about the variables that researchers commonly measure in surveys. Variables such as educational qualification, hair color, personal income, etc are given and their variable nature is to be given.
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