Generally there are three types of data collection and they are
1. Surveys: Standardized paper-and -pencil or phone questionnaires that ask predetermined questions.
2. Interviews: Structured or unstructured one-on-one directed conversations with key individuals or leaders in a community.
3. Focus groups: Structured interviews with small groups of like individuals using standardized questions, follow-up questions, and exploration of other topics that arise to better understand participants
Consequences from improperly collected data include:
Inability to answer research questions accurately.
Inability to repeat and validate the study.