Book Image

The Applied Data Science Workshop - Second Edition

By : Alex Galea
Book Image

The Applied Data Science Workshop - Second Edition

By: Alex Galea

Overview of this book

From banking and manufacturing through to education and entertainment, using data science for business has revolutionized almost every sector in the modern world. It has an important role to play in everything from app development to network security. Taking an interactive approach to learning the fundamentals, this book is ideal for beginners. You’ll learn all the best practices and techniques for applying data science in the context of real-world scenarios and examples. Starting with an introduction to data science and machine learning, you’ll start by getting to grips with Jupyter functionality and features. You’ll use Python libraries like sci-kit learn, pandas, Matplotlib, and Seaborn to perform data analysis and data preprocessing on real-world datasets from within your own Jupyter environment. Progressing through the chapters, you’ll train classification models using sci-kit learn, and assess model performance using advanced validation techniques. Towards the end, you’ll use Jupyter Notebooks to document your research, build stakeholder reports, and even analyze web performance data. By the end of The Applied Data Science Workshop, you’ll be prepared to progress from being a beginner to taking your skills to the next level by confidently applying data science techniques and tools to real-world projects.
Table of Contents (8 chapters)

1. Introduction to Jupyter Notebooks

Activity 1.01: Using Jupyter to Learn about pandas DataFrames

Solution:

  1. Start one of the following platforms to run Jupyter Notebooks:

    Jupyter Notebook (run jupyter notebook)

    JupyterLab (run jupyter lab)

    Then, open the platform in your web browser by copying and pasting the URL, as prompted in the Terminal.

  2. Load the numpy library as follows:
    import numpy as np
  3. Import pandas, as follows:
    import pandas as pd
  4. Pull up the docstring for the pandas DataFrame object, as follows:
    pd.DataFrame?

    The output is as follows:

    Figure 1:39: The docstring for pd.DataFrame

  5. Use a dictionary to create a DataFrame with fruit and score columns, as follows:
    fruit_scores = {'fruit': ['apple', 'orange', \
                              'banana', 'blueberry'], \
       ...