In qualitative and quantitative research, even though researchers might use similar approaches in data collection such as interview yet for quantitative research, they use more closed-ended approaches in which they identify set responses categories such as strongly agree and such.

Photos, archival documents and interview transcripts are examples of quantitative data

In qualitative research, the literature review section might be more of a literary opening with a personal vignette or passage

Quantitative research might be more suitable to be used if a researchers want to explore issues with research questions which trends or explanations need to be made

In qualitative research, researchers use more open-ended approaches in which they ask general questions of participants, and the participants shape the response possibilities

Either you use quantitative or qualitative research approaches, you need to make sure that the approach is matched with your research problem