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Data (/ˈdeɪtə/ DAY-tə, US also /ˈdætə/ DAT-ə) are a collection of discrete or continuous values that convey information, describing the quantity, quality, fact, statistics, other basic units of meaning, or simply sequences of symbols that may be further interpreted formally. A datum is an individual value in a collection of data. Data are usually organized into structures such as tables that provide additional context and meaning, and may themselves be used as data in larger structures. Data may be used as variables in a computational process.[1][2] Data may represent abstract ideas or concrete measurements.[3] Data are commonly used in scientific research, economics, and virtually every other form of human organizational activity. Examples of data sets include price indices (such as the consumer price index), unemployment rates, literacy rates, and census data. In this context, data represent the raw facts and figures from which useful information can be extracted.
Data are collected using techniques such as measurement, observation, query, or analysis, and are typically represented as numbers or characters that may be further processed. Field data are data that are collected in an uncontrolled, in-situ environment. Experimental data are data that are generated in the course of a controlled scientific experiment. Data are analyzed using techniques such as calculation, reasoning, discussion, presentation, visualization, or other forms of post-analysis. Prior to analysis, raw data (or unprocessed data) is typically cleaned: Outliers are removed, and obvious instrument or data entry errors are corrected.
Data can be seen as the smallest units of factual information that can be used as a basis for calculation, reasoning, or discussion. Data can range from abstract ideas to concrete measurements, including, but not limited to, statistics. Thematically connected data presented in some relevant context can be viewed as information. Contextually connected pieces of information can then be described as data insights or intelligence. The stock of insights and intelligence that accumulate over time resulting from the synthesis of data into information, can then be described as knowledge. Data has been described as "the new oil of the digital economy".[4][5] Data, as a general concept, refers to the fact that some existing information or knowledge is represented or coded in some form suitable for better usage or processing.
Advances in computing technologies have led to the advent of big data, which usually refers to very large quantities of data, usually at the petabyte scale. Using traditional data analysis methods and computing, working with such large (and growing) datasets is difficult, even impossible. (Theoretically speaking, infinite data would yield infinite information, which would render extracting insights or intelligence impossible.) In response, the relatively new field of data science uses machine learning (and other artificial intelligence) methods that allow for efficient applications of analytic methods to big data.
Hampshire (/ˈhæmpʃər/, /-ʃɪər/ (listen); abbreviated to Hants)[a] is a county in South East England on the coast of the English Channel, bordering Dorset to the south-west, Wiltshire to the north-west, Berkshire to the north, Surrey to the north-east and West Sussex to the south east. The county town is Winchester, but the county is named after Southampton. Its two largest cities are Southampton and Portsmouth which are administered separately as unitary authorities; the rest of the county is governed by a combination of the Hampshire County Council and non-metropolitan district councils.
First settled about 14,000 years ago, Hampshire's recorded history dates to Roman Britain, when its chief town was Winchester, then known as Venta Belgarum. The county was recorded in the 11th century Domesday Book, divided into 44 hundreds. From the 12th century, the ports grew in importance, fuelled by trade with the continent, wool and cloth manufacture, fishing and large shipbuilding industries. By the 16th century, the population of Southampton had outstripped that of Winchester. By the mid-19th century, the population was 219,210, double that at the beginning of the century, in more than 86,000 dwellings. Agriculture was the principal industry and 10 per cent of the county was still forest. Hampshire played a crucial military role in both World Wars. The borders of the ceremonial county were created by the Local Government Act 1972 (enacted 1974). Historically part of Hampshire, the Isle of Wight was made a separate ceremonial county and the towns of Bournemouth and Christchurch were administered as part of the ceremonial county of Dorset.
The geography of the county is varied, with upland rising to 286 m (938 ft) and mostly south-flowing rivers. There are areas of downland and marsh, and two national parks: the New Forest and part of the South Downs, which together cover 45 per cent of Hampshire.
Hampshire is one of the most affluent counties in the country, with an unemployment rate lower than the national average. Its economy mainly derives from major companies, maritime, agriculture and tourism. Tourist attractions include seaside resorts, national parks, the National Motor Museum and the Southampton Boat Show. The county is known as the home of writers Jane Austen and Charles Dickens. Hampshire is also the childhood home of Florence Nightingale and the birthplace of engineer Isambard Kingdom Brunel.
