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 👉Part 12: Model Evaluation and Validation👈 Welcome back to the Beginner's Guide to Data Science! In this installment, we will delve into the critical aspect of model evaluation and validation. After building Machine Learning algorithms, it's essential to assess their performance on unseen data to ensure their effectiveness and generalizability. Training, Validation, and Test Sets: To evaluate a model properly, it's crucial to split the available data into three sets: training set, validation set, and test set. The training set is used to train the model, the validation set is used to tune hyperparameters and make decisions during the model development phase, and the test set is used to evaluate the final performance of the model. The test set should be kept completely separate from the training and validation sets to ensure an unbiased assessment. Performance Metrics: Several performance metrics are used to evaluate the performance of ML models based on the type of probl...

 👉 Part 11: Introduction to Machine Learning👈 Welcome back to the Beginner's Guide to Data Science! In this installment, we'll dive into the exciting world of Machine Learning (ML). Machine Learning is a subset of artificial intelligence that enables systems to learn from data and make predictions or decisions without explicit programming. It plays a crucial role in modern data science, powering various applications like recommendation systems, image recognition, natural language processing, and much more. What is Machine Learning? Machine Learning can be understood as a process in which algorithms learn patterns and relationships from data to make informed decisions or predictions. There are three main types of Machine Learning: Supervised Learning : In this type, the algorithm learns from labeled data, where each example has a corresponding target variable. The goal is to learn a mapping from input features to the target variable, enabling the algorithm to predict the targe...

 👉 Part 10: Data Visualization👈 Welcome back to the Beginner's Guide to Data Science! In this installment, we will explore the fascinating world of data visualization. Data visualization is an essential skill for any data scientist, as it allows us to present complex information in a visually appealing and easily understandable manner. Whether you are exploring your data or communicating your findings to others, data visualization plays a crucial role in the data science workflow. Why Data Visualization? Data visualization serves several important purposes in the realm of data science: Data Exploration : Visualizations help us understand the underlying patterns, trends, and relationships within our data. By plotting our data, we can gain insights that may not be apparent from raw numbers or tables. Insight Communication : Effective data visualizations make it easier for us to communicate our findings to others, including stakeholders, teammates, or non-technical audiences. Visual...