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Essential Statistics for Non-STEM Data Analysts

Essential Statistics for Non-STEM Data Analysts

By : Li
4.6 (10)
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Essential Statistics for Non-STEM Data Analysts

Essential Statistics for Non-STEM Data Analysts

4.6 (10)
By: Li

Overview of this book

Statistics remain the backbone of modern analysis tasks, helping you to interpret the results produced by data science pipelines. This book is a detailed guide covering the math and various statistical methods required for undertaking data science tasks. The book starts by showing you how to preprocess data and inspect distributions and correlations from a statistical perspective. You’ll then get to grips with the fundamentals of statistical analysis and apply its concepts to real-world datasets. As you advance, you’ll find out how statistical concepts emerge from different stages of data science pipelines, understand the summary of datasets in the language of statistics, and use it to build a solid foundation for robust data products such as explanatory models and predictive models. Once you’ve uncovered the working mechanism of data science algorithms, you’ll cover essential concepts for efficient data collection, cleaning, mining, visualization, and analysis. Finally, you’ll implement statistical methods in key machine learning tasks such as classification, regression, tree-based methods, and ensemble learning. By the end of this Essential Statistics for Non-STEM Data Analysts book, you’ll have learned how to build and present a self-contained, statistics-backed data product to meet your business goals.
Table of Contents (19 chapters)
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1
Section 1: Getting Started with Statistics for Data Science
5
Section 2: Essentials of Statistical Analysis
10
Section 3: Statistics for Machine Learning
15
Section 4: Appendix

Understanding the importance of data quality

Remember the old adage that says garbage in, garbage out? This is especially true in data science. The quality of data will influence the entire downstream project. It is difficult for people who work on the downstream tasks to identify the sources of possible issues.

In the following section, I will present three examples in which poor data quality causes difficulties.

Understanding why data can be problematic

The three examples fall into three different categories that represent three different problems:

  • Inherent bias in data
  • Miscommunication in large-scale projects
  • Insufficient documentation and irreversible preprocessing

Let's start with the first example, which is quite a recent one and is pretty much a hot topic—face generation.

Bias in data sources

The first example we are going to look at is bias in data. Face-Depixelizer is a tool that is capable of significantly increasing the resolution...

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