what exactly data science

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Data science is a multidisciplinary field that involves the use of various techniques, algorithms, processes, and systems to extract knowledge and insights from structured and unstructured data. It combines elements of computer science, statistics, mathematics, domain expertise, and data engineering to analyze and interpret data to solve complex problems, make informed decisions, and support business strategies. Here are the key components and aspects of data science:

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  1. Data Collection: Data science starts with the collection of data from various sources, including databases, sensors, social media, websites, and more. This data can be structured (e.g., databases) or unstructured (e.g., text, images, videos).

  2. Data Cleaning and Preprocessing: Raw data often contains errors, missing values, or inconsistencies. Data scientists clean and preprocess the data to ensure its quality and suitability for analysis.

  3. Exploratory Data Analysis (EDA): EDA involves the use of statistical and visualization techniques to understand the characteristics of the data, identify patterns, outliers, and trends, and gain initial insights.

  4. Data Transformation and Feature Engineering: Data is transformed and engineered to create new features or representations that can enhance the performance of machine learning models. This includes tasks like normalization, one-hot encoding, and text tokenization.

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