Analyst Should Identify Relevant Questions for his Engineering
A critical early step in any analysis is to identify (for the
engineering problem at hand) which of the above questions are
relevant. That is, we need to identify which questions we want
answered and which questions have no bearing on the problem at hand.
After collecting such a set of questions, an equally important step,
which is invaluable for maintaining focus, is to prioritize those
questions in decreasing order of importance. EDA techniques are tied
in with each of the questions. There are some EDA techniques
(e.g., the scatter plot) that are broad-brushed and apply almost
universally. On the other hand, there are a large number of EDA
techniques that are specific and whose specificity is tied in with
one of the above questions. Clearly if one chooses not
to explicitly identify relevant questions, then one cannot take
advantage of these question-specific EDA technqiues.