The use of different pronunciations of the word 'cot' in different regions is a sociolinguistic variable.

Sociolinguistic variables play a crucial role in language variation and change.

When analyzing the data, the researcher treated income as a ratio variable because it has an absolute zero and allows meaningful multiplication and division.

When analyzing survey responses, we treated satisfaction level as an ordinal variable to preserve the natural ranking of the categories.

When debugging the program, I noticed that several Boolean variables were unintentionally shared between threads.

In our survey, gender is recorded as a nominal variable, so we summarize it with frequency counts rather than means.

Temperature measured in Celsius is often treated as an interval variable in statistical analyses because the magnitudes of differences between values are meaningful even though there may be no true zero point.

We observed unexpected behavior in the helium variables during the low-temperature experiment.

By measuring the pulsation periods of cepheid variables, astronomers can determine distances to nearby galaxies.

When writing documentation, I often use 'foo' as a metasyntactic variable to represent an unspecified identifier.