This document discusses planning data collection procedures for research. It describes four main types of quantitative data collection: observation, surveys, quantitative interviews, and questionnaires. Observation involves collecting structured information without direct respondent answers. Surveys collect data from a sample population. Quantitative interviews use a standardized interview guide with closed and some open-ended questions. Questionnaires can be standardized or researcher-made, and guidance is provided on developing a valid researcher-made questionnaire.