Rexer Analytics Data Mining Survey Results

Latest Results from Rexer Analytics

HIGHLIGHTS from the 2015 Data Science Survey:
    SURVEY & PARTICIPANTS:  59-item online survey conducted in 2015.  Participants: 1,220 analytic professionals from 72 countries.  This is the 7th survey in this ongoing research program.
    CORE ALGORITHM TRIAD:  Regression, Decision Trees, and Cluster analysis remain the most commonly used algorithms in the field.
    THE ASCENDANCE OF R:  76% of respondents report using R.  This is up dramatically from just 23% in 2007.  More than a third of respondents (36%) identify R as their primary tool.
    JOB SATISFACTION:  Job satisfaction in the field remains high, but has slipped since the 2013 survey. A number of factors predict Data Scientist job satisfaction levels.
    DEPLOYMENT:  Deployment continues to be a challenge for organizations, with less than two thirds of respondents indicating that their models are deployed most or all of the time.  Getting organizational buy-in is the largest barrier to deployment, with real-time scoring and other technology issues also causing significant deployment problems.
    TERMINOLOGY:  The term “Data Scientist” has surged in popularity with over 30% of us describing ourselves as data scientists now compared to only 17% in 2013.
Please contact us if you have any questions about the attached report or this research program.  Summary reports for all 7 surveys (2007-2015) are free and available by contacting  Additional information about the surveys is available at, including verbatim best practices and insights shared by respondents in previous surveys — see the Data Miner Survey links in the top right corner of our home page.
Information about Rexer Analytics and our consulting services is also available at

Author: Ajay Ohri

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