I thought they got better compared to the first few classes, but they do really revolve around R. For a rigorous treatment of the subject matter, the MITx cours

I thought they got better compared to the first few classes, but they do really revolve around R. For a rigorous treatment of the subject matter, the MITx course on Probability is really good. [1] You could also take a look at the two JHU "Mathemtical Biostatistics Bootcamp"[2] courses. Those are also quick compared to the MITx course, but a little more careful about the math than the courses in the data science specialization are. I haven't ever used Spark, and I like R, but I am going to take the Berkeley/EdX course. [1] https://www.edx.org/course/introduction-probability-science-mitx-6-041x-0 https://www.edx.org/course/introduction-probability-science-... [2] https://www.coursera.org/course/biostats https://www.coursera.org/course/biostats & https://www.coursera.org/course/biostats2 https://www.coursera.org/course/biostats2