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Data Analyst
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.[1] 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.[2] In today's business world, data analysis plays a role in making decisions more scientific and helping businesses operate more effectively.[3]
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.[4] In statistical applications, data analysis can be divided into descriptive statistics, exploratory data analysis (EDA), and confirmatory data analysis (CDA).[5] EDA focuses on discovering new features in the data while CDA focuses on confirming or falsifying existing hypotheses.[6][7] 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.[8]
Data integration is a precursor to data analysis, and data analysis is closely linked to data visualization and data dissemination.[9]
Colchester (/ˈkoʊltʃɛstər/ (audio speaker iconlisten)[1]) is a historic market town and the largest settlement within the borough of Colchester in the county of Essex, in the East of England. Colchester occupies the site of what was Camulodunum, the first major Roman city in, and sometime capital of, Roman Britain. Colchester lays claim to be Britain's oldest recorded town.[2][3] Colchester has been a military garrison since the Roman era and is currently home to the 16th Air Assault Brigade. In 2019 it had an estimated population of 138,131.[4]
Situated on the River Colne,[5] Colchester is 50 miles (80 kilometres) northeast of London and is connected to the capital by the A12 road and its railway station which is on the Great Eastern Main Line. It is seen as a popular town for commuters,[6] and is less than 30 miles (50 km) from London Stansted Airport and 20 miles (30 km) from the passenger ferry port of Harwich.
Colchester is home to Colchester Castle and Colchester United Football Club. The demonym is Colcestrian.[7]
