Data analysis is the practice of investigating the structure of data and using it to identify patterns and possible solutions to problems. A foundational element of data science, data analysis draws on methodologies from statistics, mathematics, and computer science to analyze data from past events and to predict possible outcomes.
One important trend within data analysis is machine learning, which attempts to train algorithms based on preexisting data so that they may automatically classify or predict future data. In this way, machine learning enables practices such as automated decision-making.
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