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PEOPLE AND PROCESSES FOR DATA MANAGEMENT AND ANALYTICS Cathy O’Neil, Lead Data Scientist
When do you need a data scientist?
When you have too much data for Excel to handle When do you need a data scientist?
When your data visualization skills are being stretched When do you need a data scientist?
When you aren’t sure if something is noise or information When do you need a data scientist?
When you don’t know what a confidence interval is When do you need a data scientist?
Let’s take a step back: Should you need a data scientist?
Are you asking the right questions? Should you need a data scientist?
Are you getting the most out of your data? Should you need a data scientist?
Are you anticipating shocks to your business? Should you need a data scientist?
Are you running your business sufficiently quantitatively? Should you need a data scientist?
So, you’ve decided to hire a Data Scientist (nice move!)
What do you need to get started?
Data storage What do you need to get started?
Data access — usually through a database (payoffs for different types) What do you need to get started?
Larger-scale or less uniform data may require Hadoop access (and someone with real tech expertise to set it up) What do you need to get started?
Who and how should you hire?
A math major? Perhaps a Masters in statistics? Or a Ph.D. in machine learning? Who and how should you hire?
What should the job description include? Who and how should you hire?
Who even interviews someone like this? Who and how should you hire?
What does a Data Scientist want from you?
Interesting, challenging work What do they want from you?
Lots of great data (data is sexy!) What do they want from you?
To be needed, and to have central importance to the business What do they want from you?
To be part of a team that is building something What do they want from you?
A good and ethically sound work atmosphere What do they want from you?
Cash money What do they want from you?
Further business reasons for hiring a Data Scientist
Reporting help Further business reasons
Enables you to see into data without taxing your tech team (beyond setup) Further business reasons
A/B testing Further business reasons
Beyond A/B testing: adaptability and customization Further business reasons
Knowing whether numbers are random (seasonality) or require action Further business reasons
What-if analysis Further business reasons
Help with business planning: Will there be enough data to answer a given question? Will there be enough data to optimize on the answer? Further business reasons
Education for senior management Further business reasons
Mathematically sound communication to clients Further business reasons
Case Study: Stress Tests
We can learn from finance — data miners are spoiled for data Case Study: Stress Tests
You know how big changes will affect your business directionally and specifically Case Study: Stress Tests
Stress tests allow you to combine changes and estimate quantitatively Case Study: Stress Tests
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