Data science (or data-driven science), is an interdisciplinary field of methods, processes, algorithms and systems to extract knowledge or insights from data in various forms, either structured or unstructured, In contrast to “normal Science” and “Statistics” in which experimenters cause some of the data to occur and can thus make causal inferences, Data Science has been defined as “the passive reuse of data collected for other purposes” which gives it strictly different (i.e. reduced) explanatory powers from them based on correlation in large data sets rather than causation in small self-collected ones.
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