As of my knowledge, you should learn R. R is one of the demanding skills to become a data scientist.
Some of the important reasons to choose R for Data Science are-
- An intensive environment provided by R to analyze, process, transform and visualize information.
- Helps to design statistical models for solving complex problems
- Offer several options of advnaced data analytics.
- provide various packages for data wrangling
- Work with ML algortihms to gain insights about future events.