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--- skill-tree:bda:4:b [2020/06/18 20:15] – external edit 127.0.0.1
+++ skill-tree:bda:4:b [2025/03/10 19:24] (current) – external edit 127.0.0.1
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-# BDA4-B Data-driven workflows
+# BDA4 Overview: Data Handling
-# Background
-# Aim
+Data Handling is a critical aspect of Big Data Analytics (BDA), encompassing the processes and techniques for acquiring, preprocessing, cleaning, and transforming raw data into a usable format for analysis. In this overview, we explore the key components of data handling and their importance in the data analytics workflow.
-# Outcomes
+**Preparation (BDA4.2):** Preparation involves the initial stages of data handling, where data sources are identified, accessed, and retrieved. This section discusses data collection methods, data acquisition techniques, and data integration strategies. Topics also include data extraction from various sources such as databases, files, streams, and APIs. Mastery of data preparation enables practitioners to gather diverse datasets efficiently, ensuring comprehensive coverage and availability for analysis.
+**Preprocessing (BDA4.3):** Preprocessing focuses on cleaning, transforming, and enhancing raw data to prepare it for analysis. This section covers data cleaning techniques, missing data imputation, data normalization, and feature engineering. Topics also include outlier detection, noise reduction, and data transformation methods such as scaling and encoding. Mastery of data preprocessing ensures that the data is consistent, accurate, and suitable for downstream analysis tasks.
+**Visualization (BDA4.4):** Visualization plays a crucial role in data handling, allowing practitioners to explore, understand, and communicate insights from large and complex datasets. This section discusses data visualization techniques, including charts, graphs, plots, and interactive dashboards. Topics also include visual encoding principles, color theory, and best practices for creating effective visualizations. Mastery of data visualization enables practitioners to identify patterns, trends, and outliers in the data, facilitating data-driven decision-making and storytelling.
+**Analysis (BDA4.5):** Analysis involves applying statistical, mathematical, and computational techniques to extract actionable insights and knowledge from the data. This section covers descriptive and inferential statistics, machine learning algorithms, and data analysis methods such as clustering, classification, regression, and association rule mining. Topics also include hypothesis testing, model evaluation, and interpretation of analysis results. Mastery of data analysis enables practitioners to uncover patterns, trends, and relationships in the data, enabling informed decision-making and predictive modeling.
+By mastering the principles of data handling, practitioners can effectively manage and manipulate large and diverse datasets, ensuring that the data is clean, consistent, and ready for analysis. This lays the foundation for deriving valuable insights and driving data-driven decision-making across various domains and industries.
+## Learning Outcomes
 # Subskills