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Data Science Algorithms in a Week

You're reading from   Data Science Algorithms in a Week Top 7 algorithms for scientific computing, data analysis, and machine learning

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Product type Paperback
Published in Oct 2018
Publisher Packt
ISBN-13 9781789806076
Length 214 pages
Edition 2nd Edition
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Authors (2):
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David Toth David Toth
Author Profile Icon David Toth
David Toth
David Natingga David Natingga
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David Natingga
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Toc

Table of Contents (12) Chapters Close

Preface 1. Classification Using K-Nearest Neighbors 2. Naive Bayes FREE CHAPTER 3. Decision Trees 4. Random Forests 5. Clustering into K Clusters 6. Regression 7. Time Series Analysis 8. Python Reference 9. Statistics 10. Glossary of Algorithms and Methods in Data Science
11. Other Books You May Enjoy

Weight prediction from height – linear regression on real-world data

Here, we are predicting the weight of a man from his height by using linear regression on the following data:

Height in cm

Weight in kg

180

75

174

71

184

83

168

63

178

70

172

?

 

We would like to estimate the weight of a man given that his height is 172 cm.

Analysis

In the previous example of Fahrenheit and Celsius conversion, the data fitted the linear model perfectly. Thus, we could perform even a simple mathematical analysis (solving basic equations) to gain the conversion formula. Most data in the real world does not fit a model perfectly. For such an analysis, it would be good to find a model...

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