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Data Science with SQL Server Quick Start Guide

You're reading from   Data Science with SQL Server Quick Start Guide Integrate SQL Server with data science

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Product type Paperback
Published in Aug 2018
Publisher Packt
ISBN-13 9781789537123
Length 206 pages
Edition 1st Edition
Languages
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Author (1):
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Dejan Sarka Dejan Sarka
Author Profile Icon Dejan Sarka
Dejan Sarka
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Table of Contents (10) Chapters Close

Preface 1. Writing Queries with T-SQL FREE CHAPTER 2. Introducing R 3. Getting Familiar with Python 4. Data Overview 5. Data Preparation 6. Intermediate Statistics and Graphs 7. Unsupervised Machine Learning 8. Supervised Machine Learning 9. Other Books You May Enjoy

Introducing descriptive statistics for continuous variables

A continuous variable can take any value from an interval, or from all real numbers; there is no limit for the number of distinct values here. Of course, you could try to discretize a continuous variable and then treat it as a discrete one. I will discuss different discretization options in the next chapter. In this section, I am going to introduce some statistical measures that describe the distribution of a continuous variable, measures that are called descriptive statistics.

You want to understand the distribution of a continuous variable. You can create graphs for all continuous variables. However, comparing tens or even hundreds of graphs visually does not tell you much. You can also describe the distribution numerically, with descriptive statistics. Comparing numbers is much faster and easier than comparing graphs...

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