Experimentation for Improvement [0], taught by Kevin Dunn [1][2]. It's not very difficult to follow, and teaches some basics of experiment design. It's explained in a very well suited manner for non-academics, with examples about how you can implement this kind of experiments to improve things at home or at work.

[0] https://www.coursera.org/learn/experimentation [1] https://learnche.org/ [2] https://github.com/kgdunn