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Essential Statistics for Non-STEM Data Analysts

You're reading from   Essential Statistics for Non-STEM Data Analysts Get to grips with the statistics and math knowledge needed to enter the world of data science with Python

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Product type Paperback
Published in Nov 2020
Publisher Packt
ISBN-13 9781838984847
Length 392 pages
Edition 1st Edition
Languages
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Author (1):
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Rongpeng Li Rongpeng Li
Author Profile Icon Rongpeng Li
Rongpeng Li
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Table of Contents (19) Chapters Close

Preface 1. Section 1: Getting Started with Statistics for Data Science
2. Chapter 1: Fundamentals of Data Collection, Cleaning, and Preprocessing FREE CHAPTER 3. Chapter 2: Essential Statistics for Data Assessment 4. Chapter 3: Visualization with Statistical Graphs 5. Section 2: Essentials of Statistical Analysis
6. Chapter 4: Sampling and Inferential Statistics 7. Chapter 5: Common Probability Distributions 8. Chapter 6: Parametric Estimation 9. Chapter 7: Statistical Hypothesis Testing 10. Section 3: Statistics for Machine Learning
11. Chapter 8: Statistics for Regression 12. Chapter 9: Statistics for Classification 13. Chapter 10: Statistics for Tree-Based Methods 14. Chapter 11: Statistics for Ensemble Methods 15. Section 4: Appendix
16. Chapter 12: A Collection of Best Practices 17. Chapter 13: Exercises and Projects 18. Other Books You May Enjoy

Chapter 9: Statistics for Classification

In the previous chapter, we covered regression problems where correlations, in the form of a numerical relationship between independent variables and dependent variables, are established.

Different from regression problems, classification problems aim to predict the categorical dependent variable from independent variables. For example, with the same Netflix stock price data and other potential data, we can build a model to use historical data that predicts whether the stock price will rise or fall after a fixed amount of time. In this case, the dependent variable is binary: rise or fall (let's ignore the possibility of having the same value for simplicity). Therefore, this is a typical binary classification problem. We will look at similar problems in this chapter.

In this chapter, we will cover the following topics:

  • Understanding how a logistic regression classifier works
  • Learning how to evaluate the performance of...
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