https://www.coursera.org/specializations/jhu-data-science
https://www.coursera.org/learn/probability-intro
https://www.coursera.org/specializations/executive-data-science
https://www.coursera.org/specializations/data-science-python
https://www.coursera.org/learn/inferential-statistics-intro
https://www.coursera.org/learn/basic-statistics
https://www.edx.org/course/statistics-and-r
https://www.edx.org/course/using-python-for-research
https://www.edx.org/course/python-for-data-science
https://www.edx.org/course/statistical-thinking-for-data-science-and-analytics
DataCamp.com