These inferences can be −Īnswering yes/no questions about the data (hypothesis testing)Įstimating numerical characteristics of the data (estimation)ĭescribing associations within the data (correlation) Inferential statistics − It uses patterns in the sample data to draw inferences about the represented population or accounting for randomness. Mean, Standard Deviation for Continuous Dataįrequency, Percentage for Categorical Data In data analysis, two main statistical methodologies are used −ĭescriptive statistics − In descriptive statistics, data from the entire population or a sample is summarized with numerical descriptors such as − Statistics is the study of collection, analysis, interpretation, presentation, and organization of data. It helps in implementing an effective strategy based on insights that can provide businesses with a competitive market-advantage and long-term stability. The goal of business intelligence is to allow easy interpretation of large volumes of data to identify new opportunities. Business Intelligenceīusiness Intelligence techniques and tools are for acquisition and transformation of large amounts of unstructured business data to help identify, develop and create new strategic business opportunities. The patterns obtained from data mining can be considered as a summary of the input data that can be used in further analysis or to obtain more accurate prediction results by a decision support system.
Note that the goal is the extraction of patterns and knowledge from large amounts of data and not the extraction of data itself.ĭata mining analysis involves computer science methods at the intersection of the artificial intelligence, machine learning, statistics, and database systems.
The major data analysis approaches are −ĭata Mining is the analysis of large quantities of data to extract previously unknown, interesting patterns of data, unusual data and the dependencies. Several data analysis techniques exist encompassing various domains such as business, science, social science, etc. Data Analysis is a process of inspecting, cleaning, transforming and modeling data with the goal of discovering useful information, suggesting conclusions and supporting decision-making.
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