As conceived opinion survey
When planning or designing an opinion survey is essential to note here:
1) choose the universe to be surveyed
2) define the statistical unit or unit of analysis Stats
3) collect information to organize the opinion survey, classify and organize
4) choose the method or data collection technique, the type of survey (individual, personal, phone, email)
5) choosing the sampling method (random, quota, cluster, etc.).
6) define the variables to be analyzed and the type of statistical analysis will be done with data from questionnaires
7) establish the sample size
8) define a sampling error according to relevant factors such as budget, time and type of sampling design
9) establish the economic cost of the survey and total execution time of the investigation
10) organize the field work calendar, staff and resources.
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Opinion surveys Surveys of public opinion and policy surveys. Methodology, theory and analysis of public opinion polls .