Data collection methods are techniques used to gather information for analysis. Common methods include surveys, interviews, observations, and experiments. Each method has its strengths and weaknesses, depending on the research goals and the type of data needed. For example, surveys can reach a large audience quickly, while interviews provide in-depth insights. Another important aspect of data collection is ensuring accuracy and reliability. Researchers must choose appropriate tools and techniques to minimize bias and errors. Observational studies can offer real-world insights, while experiments allow for controlled testing of hypotheses. Selecting the right method is crucial for obtaining valid results.