Node.js API Masterclass with Express and MongoDB - Aggregate - Calculate Average Rating

The video tutorial demonstrates how to calculate and update the average rating for boot camps in a database. It begins by explaining the process of copying and modifying existing methods to calculate average ratings. The tutorial then guides through updating the database schema to include average ratings and testing the implementation by creating users, boot camps, and reviews. Finally, it verifies the functionality by checking the average rating updates as new reviews are added or deleted.

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