There are two main types of data: quantitative and qualitative. Quantitative data focuses on numerical measurements and statistical analysis through methods like surveys and questionnaires. Qualitative data focuses on opinions and detailed information, usually collected through open-ended written responses. Media producers define their audience through various profiling methods like demographics, socioeconomic status, geodemographics, psychodemographics, and identifying mainstream versus niche audiences. This helps media producers understand who their target audience is and how to best appeal to and market their products.