1.1.9
Data Analysis
Data analysis involves summarising the data and interpreting their meaning in a way that provides clear answers to questions that initiated the survey. Data analysis should relate the survey results to the questions and issues identified by the Statement of Objectives. It is one of the most crucial steps of a survey since the quality of the analysis can substantially affect the usefulness of the whole survey. Data analysis may be restricted to the survey data alone or it may compare the survey’s estimates with results obtained from other surveys or data sources. Often, it consists of examining tables, charts and various summary measures, such as frequency distributions and averages to summarise the data. Statistical inference may be used in order to verify hypotheses or study the relationships between characteristics, for instance, using regression, analysis of variance or chi-square tests. Data analysis is covered in Chapter 11 - Data Analysis.
تجزیه و تحلیل داده ها شامل جمع بندی و تفسیر معنا دار داده ها به روشی است که پاسخ های روشنیی به سوالات آغازین پیمایش می دهد.
تحلیل داده ها باید نتایج پیمایش را به سوالات و مباحثی که بیانیه اهداف تعیین کرده است , مرتبط کند. آن یکی از حساس ترین مراحل پیمایش است زیرا کیفیت تحلیل داد ه می تواند به میزان زیاد تاثیر سودمندی بر همه پیمایش داشته باشد.