CSC318H1 Study Guide - Final Guide: Spreadsheet, Data Analysis, Conversation Analysis
Document Summary
Ch 7 data gathering. Five key issues of data gathering: 1. Identifying participants: identify specific goals for study before gathering data. Goals influence nature of data gathering sessions, techniques used, Anaylsis to be performed: goals expression can be informal/formal. Interaction design, usually express data gathering goals informally: goals indiciate the specific people to gather data from (population) Sampling population too large, need to choose subset. Techniques: simple random sampling, stratified sampling. Saturation sampling all members of population accessible. Techniques: convenience sampling, volunteer panels: participant selection techniques. Porbabaility methods ! statistical tests, generalize to population. Random sampling use random number generator, or choose every nth person in a list. Stratified sampling divide population into groups (ex. by attributes) then apply random sampling. Non- probability methods ! can"t reliably generalize to population. Conveniencee sampling, volunteer panel selection rely more: 3. Relationship with participants on participant availability.
