The course contents are unfortunately very poorly designed, and this has been an ongoing trend in this overall specialization.
The weekly lecture videos are at times quite unclear and leave more questions unanswered than they answer. I (and other learners) have found glaring gaps in the course content again and again. The examples that the lecture videos use do not nearly cover the variety of datasets being used by the learners in the course; and the least that could have been done is to at least inform learners of what to expect if they were dealing with a different research question and using an alternate dataset.
I know the defense may be that the videos are meant to be introductory / gateway to a deeper understanding of that particular topic. The course moderators / instructors did a terrible job in keeping up with answering key questions that were posted in the discussion board. Yet most of the times when I was still searching for answers, looking up similar introductory videos in Youtube were far more helpful (and I didn't have to pay to watch them).
The assignments are poorly worded because the instructions are not always very clear, which in my opinion set up a lot of learners including myself for failure. The lectures are often broader than what should be considered when finishing the weekly assignment. It wasn't even clear at times of what was exactly being expected in the assignment. The rubric that I had to use to mark my peers' work meant their analysis had gaps because the criteria for assessment is not transparent AT ALL during the submission of an assignment (they are starkly different in terms of details).
All to say that I have been quite frustrated despite my best efforts to learn from these materials and much MUCH more can be done to improve the actual content of the lectures.
Please consider adding alternate resources AS WELL where learners can go seek the right answers if the answer is not provided by the lecture materials. This can help to cut back on countless precious hours for those who are juggling a full-time job and retraining / career change like I am, not to mention the countless other scenarios of other learners out there.
I am neither inattentive nor lazy, and learning this content is very important to me, if it wasn't clear through my comments here already.
One last comment, for those of you who are all very sceptical let me tell you that I know that I don't have to be a statistician to grade the course contents, and I really hope the intructors are paying attention to these and similar comments from those enrolled in this specialization and the others who have completed the course.