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You're reading from Practical Predictive Analytics

Product typeBook

Published inJun 2017

Reading LevelIntermediate

PublisherPackt

ISBN-139781785886188

Edition1st Edition

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Splunk

Concepts

Predictive Analytics

Author (1)

Ralph Winters

Constructing a cross-tab

Now that we have categorized age, we can run a cross-tab which counts outcomes by the age category.

Since there are only two outcomes and two age categories, this results in a four-cell crosstab:

First, display the results using the special Databricks display command.
After the results appear as shown in the table below, you can click the plot button (2nd icon on the bottom left) and the Customized Plot dialogue will appear, which will allow the results to be plotted as a bar chart. The plot show that diabetes occurs more frequently in the higher age group than in the lower age group, while the reverse is true for the non-diabetes group:

        table <- crosstab(filtered, "outcome", "agecat") 
        display(as.data.frame(table))

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Practical Predictive Analytics

Published in: Jun 2017Publisher: PacktISBN-13: 9781785886188

Author (1)

Ralph Winters

Ralph Winters started his career as a database researcher for a music performing rights organization (he composed as well!), and then branched out into healthcare survey research, finally landing in the Analytics and Information technology world. He has provided his statistical and analytics expertise to many large fortune 500 companies in the financial, direct marketing, insurance, healthcare, and pharmaceutical industries. He has worked on many diverse types of predictive analytics projects involving customerretention, anti-money laundering, voice of the customer text mining analytics, and health care risk and customer choice models. He is currently data architect for a healthcare services company working in the data and advanced analytics group. He enjoys working collaboratively with a smart team of business analysts, technologists, actuaries as well as with other data scientists. Ralph considered himself a practical person. In addition to authoring Practical Predictive Analytics for Packt Publishing, he has also contributed two tutorials illustrating the use of predictive analytics in Medicine and Healthcare in Practical Predictive Analytics and Decisioning Systems for Medicine: Miner et al., Elsevier September, 2014, and also presented Practical Text Mining with SQL using Relational Databases, at the 2013 11th Annual Text and Social Analytics Summit in Cambridge, MA. Ralph resides in New Jersey with his loving wife Katherine, amazing daughters Claire and Anna, and his four-legged friends, Bubba and Phoebe, who can be unpredictable. Ralph's web site can be found at ralphwinters.com
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