Are mail surveys quantitative or qualitative

Mail surveys can be both quantitative and qualitative, depending on the design and purpose of the survey.

Quantitative mail surveys:

Qualitative mail surveys:

Hybrid mail surveys:

In summary, mail surveys can be designed to collect either quantitative or qualitative data, or a combination of both. The choice of design depends on the research question, the purpose of the survey, and the type of data needed to answer the question.