Quatitative data numbers, or can be expressed as number: quantitative analysis numerical methods to acertain size, magnitude, amount images. Qualitative data difficult to measure sensibly as number: incl. descriptions, interviewees, vigneetes of activities, qualitative analysis expresses the nature of elements. All previously described data collection methods can produce and is represented as themes, patterns, stories quantitative and qualitative data: ex. commnets fields in questionnaire = qualitative data, ex. counting people hours in observations = quantitative. First steps in analyzing data, some initial process required data: interview data. Ex. quantitative data: closed questions responses, age, Initital processing: transcription of recording, opinions, pictures job, etc. expanding notes. Usually suppliement interviewer notes w/ interview snips: questionnaire data. Data can be filtered according to respondent subpopulation (ex. youths) or according to question (ex. anwered a for q5) Initial processing: clean up to review misunderstood, wrong answers: observation data. Ex. qualitative data: records of behavior, descriptions of a task being undertaken, copies of informal procedures.