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Getting More Value from Data: 6 Facts About the Structure and Practice of Data Science 

Bob Hayes, PhD | Nov 5, 2015 606 views No Comments

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The value of data is measured by what you do with it, and organizations are relying on data scientists to extract that value. I recently conducted a survey of data professionals to better understand what it means to be a data scientist. I discovered a few things in this study that can help organizations optimize the value of their data. While I wrote about these findings in prior posts, I want to summarize the major points here, in a more concise way.

Facts about Data Science

While some of these points below seem rather mundane or obvious, it’s important to note that these ideas are no longer only opinions; they are backed up by empirical data. This is how data science really works.

1. There are a handful of different skills that make up the field of data science. While we measured five distinct skill types, a factor analysis of proficiency ratings of these five skills resulted in three distinct skill types :

  1. Business
  2. Technology / Programming
  3. Statistics / Math

2. There are different kinds of data scientists. Our study identified four distinct job roles among these data professionals :

  1. Developer (e.g., developer, engineer)
  2. Researcher (e.g., researcher, scientist, statistician)
  3. Creative (e.g., Jack of all trades, artist, hacker)
  4. Business Management (e.g., leader, business person, entrepreneur)

Respondents were asked to select which of the job roles best described their work. They could choose one or any combination of job roles. The correlation across job roles (1 = selected; 0 = not selected) was quite low (average r was -.07; highest r was -.30), suggesting that these four job roles are distinct from each other.

3. Different job roles require different skill sets. Data professionals in different job roles have different skill sets . Not surprisingly, data professionals who identified as Developers reported the highest levels of proficiency in Technology and Programming skills compared to their counterparts. Additionally, Researchers reported the highest levels of proficiency in Statistics and Math while data professionals who identified as Business Management reported the highest levels of proficiency in Business. Finally, data professionals who identified as Creative reported moderate ratings across all skill sets, suggesting they are indeed jack-of-all-trades.

4. Finding a data professional who is proficient in all data science skill areas is extremely difficult. Data professionals rarely possess proficiency in all five skill areas at the level needed to be successful at work. In fact, the chance of finding a data professional with expert skills in all five data science skills is akin to finding a unicorn; they just don’t exist.

5. A team approach is an an effective way of approaching data science projects. We found that data professionals who worked with other data professionals who had complementary skills were more satisfied with their work than when they did not work with another data professional. For example, Business Management professionals were more satisfied with the outcome of their work when they had quantitative-minded experts on their team (e.g., Math & Modeling and Statistics) compared to when they did not have them on their team. Also, Researchers were more satisfied with their work outcome when they were paired with experts in Business and Math & Modeling. Developers were more satisfied with their work outcomes when paired with an expert in Business. Creatives’ satisfaction with their work product is not impacted by the presence of other experts; this finding is likely due to the fact that Creatives are not able to contribute sufficiently to teamwork success because they are not highly proficient in any of the data skills (see point 3 above).

6. You can find out what kind of data scientist you are for free. As part of our study of data scientists, we at AnalyticsWeek developed the Data Skills Scoring System (DS3), a free web-based self-assessment survey that measures proficiency across five broad data science skills: business, technology, math and modeling, programming and statistics. The DS3 takes less than 5 minutes to complete. Our hope is that the DS3 can optimize the value of data by improving how data professionals work together. If you are a data professional, the DS3 can help you:

  1. identify your analytics strengths
  2. understand how to improve your analytics skill set
  3. identify team members who complement your skills
  4. capitalize on job postings that match your skill set

Find out your data skills score by taking the free Data Skills Scoring System Survey: http://pxl.me/awrds3

Summary and Recommended Action

Our research of data scientists helps to understand the structure and practice of data science. The practice of data science requires proficiency in a handful of specific data skills, including business acumen, technology / programming and statistics / math. Different data professionals report vastly different proficiency levels across these skills. Because data professionals tend to specialize in only one or two skill areas, organizations have a better chance of extracting value from their data when they adopt a team approach with data scientists who have complementary skill sets. Finally, data professionals can easily determine their data skills strengths by taking a brief survey. My hope is that our research will help companies optimize the value of their data.

Measuring proficiency in data skills is useful for many constituencies, including budding data scientists and companies who employ them. Companies, getting feedback from their data professionals about their skills, can better manage their data science teams and identify and close data science talent gaps.

Chief data/analytics officers need to know the proficiency of their data professionals to ensure they staff data-intensive projects with the correct mix of data professionals. Recruiters need to know the skills of their current data professionals to effectively market to and recruit data professionals who have the right skills to fill specific roles. Knowing the data science capabilities of data professionals is a good first step to help organizations improve the value of their data.

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