Knowledges and Abilities: Thorough knowledge of research techniques, including the planning of studies and investigations, determining variables, developing bibliographical and other sources of data, and preparation of research reports; general knowledge of statistical principles and procedures, including methods of collecting statistical data, simple correlation methods, time series analyses, analysis of frequency series, sampling techniques, and construction of index numbers; general knowledge of sources of information on social, economic, and population trends in California. Ability to prepare questionnaires and other survey instruments; ability to gather, compile, and analyze research data, and to present data in tabular, graphic, and pictorial form, ability to prepare and work clear and comprehensive reports; capacity for independent and creative thinking and writing on research and statistical problems; ability to plan, organize and supervise the work of a small team.