Tools versus Tools

Let’s Take a Break from the Money

The first category of tools that’s worth mentioning is operating systems. Windows is still the most widely used (72%), and Linux (50%) is slightly more popular than Mac OS X (43%). Compared to last year, Mac OS X and Windows have both gained 6-7%. Almost everyone uses either Mac OS X or Windows (94%, up from 87% of last year’s sample), and there is a significant overlap between each of these operating systems: all three are used by 12% of the sample (compared to 9% last year), and only 46% use just one of the three.

Specific Tool Usage Rates

Beyond operating systems, we will refrain from imposing our own system of classification.[6] Tool usage rates on the whole changed little from last year’s salary survey results:

68% of the sample use SQL

59% use Excel

51% use Python

All of the above rates are within 1% of last year’s values.

R, however, fell from 57% to 52%, although this is only marginally significant (p = .13).

The new, powerful, and suddenly popular Spark, as well as Scala, the language in which Spark is written, saw large increases to 17% and 10%, respectively.

Tableau’s share also grew from 25% to 31%.

Aside from R, other tools that are not used as widely by this year’s survey respondents as last year’s include:

Perl (12% to 8%)

Matlab (12% to 6%)

C# (12% to 6%)

Mahout (10% to 3%)

Apache Hadoop (19% to 13%)

Java (32% to 23%)

All of these differences are statistically significant at the 0.10 level. ...

Get 2015 Data Science Salary Survey now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.