What kind of data is observational data? Where does it come from and how is it used?

Question:

What kind of data is observational data? Where does it come from and how is it used? What are the advantages and disadvantages of using this kind of data? LPO98

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For  book-img-for-question
Question Posted: