Explore methods for collecting data from different sources, data cleaning techniques, and preprocessing steps to ensure data quality for analysis.
Data Collection and Preprocessing 1. Data Collection: Definition: Data collection is the process of gathering and measuring information on variables of interest. Sources: Data can be collected from various sources such as surveys, sensors, social media, databases, and more. Methods: Common methods include interviews, questionnaires, observations, and web scraping. Considerations: Ensure data qual...…
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