Data analysis is a process of inspecting, cleansing, transforming, and modeling data with the goal of discovering useful information, informing conclusions, and supporting decision-making. Data analysis has multiple facets and approaches, encompassing diverse techniques under a variety of names, and is used in different business, science, and social science domains. In today's business world, data analysis plays a role in making decisions more scientific and helping businesses operate more effectively.
Data mining is a particular data analysis technique that focuses on statistical modeling and knowledge discovery for predictive rather than purely descriptive purposes, while business intelligence covers data analysis that relies heavily on aggregation, focusing mainly on business information. In statistical applications, data analysis can be divided into descriptive statistics, exploratory data analysis (EDA), and confirmatory data analysis (CDA). EDA focuses on discovering new features in the data while CDA focuses on confirming or falsifying existing hypotheses. Predictive analytics focuses on the application of statistical models for predictive forecasting or classification, while text analytics applies statistical, linguistic, and structural techniques to extract and classify information from textual sources, a species of unstructured data. All of the above are varieties of data analysis.
Data integration is a precursor to data analysis, and data analysis is closely linked to data visualization and data dissemination.
Romford is a large town in east London and the administrative centre of the London Borough of Havering. It is located 14.1 miles (23 kilometres) northeast of Charing Cross and is one of the major metropolitan centres identified in the London Plan. Historically, Romford was a market town in the county of Essex, and formed the administrative centre of the liberty of Havering before that liberty was dissolved in 1892. Good road links to London and the opening of the railway station in 1839 were key to the development of the town. The economic history of Romford is characterised by a shift from agriculture to light industry and then to retail and commerce. As part of the suburban growth of London throughout the 20th century, Romford significantly expanded and increased in population, becoming a municipal borough in 1937 and was incorporated into Greater London in 1965. Today, it is one of the largest commercial, retail, entertainment and leisure districts in London and has a well-developed night-time economy as well. Its population, as of 2011, was 122,854.