Beginner · Data
Data analysis
Visual diagram · (in preparation) · Math · (in preparation) · Worked example · 3 difficulty levels.
TL;DR. Data analysis involves examining, cleaning, transforming, and visualizing data to discover useful information and patterns.
Technical Definition
Data analysis involves examining, cleaning, transforming, and visualizing data to discover useful information and patterns.
How it works
Data analysis is the process of inspecting, cleansing, transforming, and modeling data to help discover useful information, inform conclusions, and support decision-making. It is a crucial first step before building models, helping to understand the data's characteristics, identify potential issues, and guide feature engineering. Visualization is a key component of data analysis.
Related Concepts
- Feature Engineering — The process of creating, selecting, and transforming input variables to improve a machine learning model's performance.