I liked the course, but was very disappointed by the way the Review and Exam questions were compiled.
To me it seems the questions were not created by an SME but simply put together based on the course text and therefore have no benefit for learning and understanding.
This also causes questions that also have correct answers being marked incorrect (example : When importing Excel spread sheets only the first sheet is being imported. True or False?
The actual correct answer would be False because Watson is prompting You to choose which sheet to import, it is not only importing the first sheet. When selecting False You get a failed verdict for this question)
If You are actually interested in learning about this product this makes the question part very frustrating.
Still, rest of the course was very good.
Thanks

Actually , I am trying or playing it with to guess how actually it behaves. But when I mistyped python to pyhton it stucks and giving wron answer.

And it can suggest some of the idea. ex: type "actually I would like to know about business inteligence or like some databse administration" and see result.

Hope you would like this one.
I actually Like this concept from you and feel like playing with little child that knows some of the sentences and repeting it. But it can be much more than it is today. Hope you'd like my feed.

Thank you.

I am new to Data Science and I have taken the DS Fundamentals course and am 4/5ths through DS for Business. The course structure, language, and materials are abysmal. Fundamentals need to be explained in layman's terms, not jargon. Make videos that actually illustrate the course text, not just parrot it with a useless graphic.The math operations used in R need their own course. And get the module sequencing correct, so students don't have to hunt down materials (and then load the same ones repeatedly). Furthermore, I think the quizzes and tests should go more in depth on the subject matter, and not just be sound-bite recall. I've done pretty well on the quizzes and tests, but I can't say I've learned much, beyond some jargon.
I don't mean to completely trash BDU, I'm just frustrated because this should be a GREAT data science resource for all levels, but it's more like a refresher for advanced students with really easy exams. I hope it's due to growing pains, and I hope the courses will get sorted out soon.

On Q.13 of Spark overview for scala analytics, both 'group by ' and 'all of the above' is showing the answer as correct. it is supposed to be a single correct answer question. Please correct it.
second, kindly make arrangements so that there is no check-reset-check-reset-check-reset-final check loop!!
It would make more sense to save and evaluate the answer when the option is clicked.
This exam had 20 question, for each question the number of steps are :,
1.click option of choice
2.click check
3.click reset
4.click option
5.click check
6.click reset
7. click option
8.click final check

That's 8 click per question.
For 20 questions that's 20*8 160 clicks, which is rather annoying.

Instead it would make more sense to have the following:
If user clicks option and it is correct, the answer should get submitted/locked so that way we can move on to the next question.

Also I see no reason behind the logic of shuffling the options each time an answer is submitted.
Please make these changes!!

Vivek Mangipudi
MS in CS UT DAllas (Data Science Specialization)
vivek.mangipudi13@gmail.com
vvm140130@utdallas.edu