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Hands-On Data Science with Anaconda

You're reading from  Hands-On Data Science with Anaconda

Product type Book
Published in May 2018
Publisher Packt
ISBN-13 9781788831192
Pages 364 pages
Edition 1st Edition
Languages
Authors (2):
Yuxing Yan Yuxing Yan
Profile icon Yuxing Yan
James Yan James Yan
Profile icon James Yan
View More author details

Table of Contents (15) Chapters

Preface Ecosystem of Anaconda Anaconda Installation Data Basics Data Visualization Statistical Modeling in Anaconda Managing Packages Optimization in Anaconda Unsupervised Learning in Anaconda Supervised Learning in Anaconda Predictive Data Analytics – Modeling and Validation Anaconda Cloud Distributed Computing, Parallel Computing, and HPCC References Other Books You May Enjoy

Detecting outliers and treatments

First, a word of caution: one person's waste might be another person's treasure, and this is true for outliers. For example, for the week of 2/5/2018 to 2/15/2018, the Dow Jones Industrial Average (DJIA) suffers a huge loss. Cheng and Hum (2018) show that the index travels more than 22,000 points, as shown in the following table:

Weekday
Points

Monday

5,113

Tuesday

5,460

Wednesday

2,886

Thursday

3,369

Friday

5,425

Total

22,253

Table 5.1 Dow Jones industrial average points traveled

If we want to study the relationship between a stock and the DJIA index, the observations might be treated as outliers. However, when studying the topic related to the impact of the market on individual stocks, we should pay special attention to those observations. In other words, those observations should not be...

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